CN220627047U

CN220627047U - Hard disk system

Info

Publication number: CN220627047U
Application number: CN202322378137.8U
Authority: CN
Inventors: 陈永佳
Original assignee: Mitac Computer Shunde Ltd; Mitac Computing Technology Corp
Current assignee: Mitac Computer Shunde Ltd; Mitac Computing Technology Corp
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-03-19
Anticipated expiration: 2033-09-01

Abstract

A hard disk system is installed in a server. The hard disk system comprises a connecting plate device, a plurality of shell modules, a plurality of adapter plate modules which are detachably combined on the shell modules and can be inserted to connect the connecting plate device, and a plurality of hard disk expansion cards which can be inserted to combine the adapter plate modules. The connection plate arrangement comprises a plurality of connector modules. Each adapter plate module comprises an adapter plate with a golden finger unit and a hard disk connector arranged on the adapter plate. The hard disk connector combined with each adapter plate module is inserted into a combining part of each hard disk expansion card, each connector module is connected through the golden finger unit of each adapter plate, and the pin definition of each connector module meets a first transmission protocol standard and forms an electric connection design, so that each hard disk expansion card is electrically connected to the combined connector module through the golden finger unit of the corresponding adapter plate through the hard disk connector which is connected and meets the second transmission protocol.

Description

Hard disk system

Technical Field

The present utility model relates to a hard disk server, and more particularly, to a hard disk system.

Background

In recent years, e1.S SSD has been used in servers to meet the application requirements of high-density Storage servers (Storage servers) in 1U enclosures. However, in the existing 1U chassis, a general Computing Server (Computing Server) usage architecture is assembled, and in general, the Computing Server only needs to use an m.2 expansion card as an SSD, so that an expensive e1 s SSD is not needed, and cost is effectively saved. However, since the architecture of the original assembled e1 s SSD meets the EDSFF form factor definition, the m.2 expansion card cannot be directly assembled to replace the e1 s SSD, which is inconvenient for assembly, and deserves careful consideration and further study and improvement by practitioners.

Disclosure of Invention

Therefore, the present utility model provides a hard disk system with excellent applicability.

Thus, the hard disk system of the utility model is installed in a server. The hard disk system comprises a connecting plate device, a plurality of shell modules, a plurality of adapter plate modules which are detachably combined on the shell modules and can be inserted to connect the connecting plate device, a plurality of hard disk expansion cards which can be inserted to combine the adapter plate modules, and a plurality of first fixing units for positioning the hard disk expansion cards on the adapter plate modules.

The connecting plate device comprises a connecting plate electrically connected with a main board and a plurality of connector modules arranged on the connecting plate. The pin definition of each connector module conforms to a first transmission protocol standard.

Each shell module comprises a base plate and two side plates which extend from two opposite sides of the base plate to a direction away from the base plate. The base plate and the side plate jointly define an accommodating space.

The adapter plate module can be inserted with the connector module connected with the connecting plate device. Each adapter plate module comprises an adapter plate detachably fixed on a base plate of any shell module and a hard disk connector which is arranged on the adapter plate and accords with a second transmission protocol. Each of the adapter plates is provided with a plate body fixed on the base plate and positioned in the accommodating space, and a golden finger unit which extends from the plate body to the direction of the adapter plate device and can be inserted into any connector module connected with the adapter plate device. The golden finger unit of each adapter board can form electric connection with the connector module which is inserted and connected with the golden finger unit. Each hard disk connector is arranged on the corresponding plate body and extends from the corresponding plate body to the direction away from the substrate of the shell module.

The hard disk expansion card is inserted with a hard disk connector combined with the adapter plate module. Each hard disk expansion card is provided with a combination part and a positioning part which are positioned at two opposite ends. The combination part of each hard disk expansion card can be inserted with a hard disk connector combined with any adapter plate module.

The first fixing unit is used for positioning the hard disk expansion card on the adapter plate of the adapter plate module. Each first fixing unit comprises a first nut fixedly arranged on the plate body of the corresponding adapter plate and corresponding to the positioning part of each hard disk expansion card, and a first locking piece detachably locked into the first nut. The first locking piece is locked into the first nut and can make the first locking piece force the corresponding positioning part of the hard disk expansion card towards the direction of the first nut.

Specifically, the hard disk system and the main board are accommodated in a casing, the casing is provided with a hard disk installation area and two heat dissipation wind flow areas positioned at two opposite sides of the hard disk installation area, a connecting plate of the connecting plate device is positioned in the casing, the connector modules of the connecting plate device correspond to the hard disk installation area, each connecting plate module is longitudinally inserted into the hard disk installation area of the casing, a golden finger unit of each connecting plate unit is inserted into and connected with one connector module, and the golden finger unit of each connecting plate unit is electrically connected with the connector module which is inserted and connected with the golden finger unit of each connecting plate unit.

In particular, each connector module of the connecting plate device is provided with an orthogonal direction slot which is arranged on the connecting plate and can be used for inserting and connecting a golden finger unit of any one of the adapter plate units.

Particularly, the connecting plate device also comprises a plurality of main board connecting modules which are arranged on the connecting plate, are electrically connected with the main board and accord with a third transmission protocol, and each main board connecting module is connected with the orthogonal direction slots of two connector modules.

The second fixing units comprise a plurality of nut posts fixedly arranged on the base plate of the corresponding shell module, and a plurality of second locking pieces detachably penetrating through the plate body of the corresponding adapter plate and locked into the nut posts, and the second locking pieces of each second fixing unit penetrate through the corresponding plate body and locked into the corresponding nut posts so that the corresponding plate body is fixed on the base plate of the corresponding shell module.

In particular, the positioning portion of each hard disk expansion card has a concave edge, and the concave edge of each positioning portion can abut against the first nut of the corresponding first fixing unit and can be pressed in the direction of the corresponding first nut by the corresponding first locking piece.

Particularly, each adapter plate module meets the specification of an E1.S Ruler type solid state disk module (Ruler SSD).

Thus, the hard disk system of the utility model is installed in a server. The server has a main board. The hard disk system comprises a connecting plate device, a shell module, an adapter plate module which can be detachably combined on the shell module and can be inserted to connect the connecting plate device, a hard disk expansion card which can be inserted to combine the adapter plate module, and a first fixing unit for positioning the hard disk expansion card on the adapter plate module.

The connecting plate device comprises a connecting plate electrically connected with the main board and a connector module arranged on the connecting plate. The pin definition of the connector module conforms to a first transmission protocol standard.

The shell module comprises a base plate and two side plates which extend from two opposite sides of the base plate to a direction away from the base plate. The base plate and the side plate jointly define an accommodating space.

The adapter plate module can be inserted with a connector module connected with the connecting plate device. The adapter plate module comprises an adapter plate detachably fixed on the base plate of the shell module and a hard disk connector which is arranged on the adapter plate and accords with a second transmission protocol. The adapter plate is provided with a plate body fixed on the base plate and positioned in the accommodating space, and a golden finger unit which extends from the plate body to the direction of the connecting plate device and can be inserted with a connector module connected with the connecting plate device. The golden finger unit of the adapter plate can be electrically connected with the connector module which is inserted and connected with the golden finger unit. The hard disk connector is arranged on the plate body and extends from the plate body to a direction away from the base plate of the shell module.

The hard disk expansion card is inserted with a hard disk connector combined with the adapter plate module. The hard disk expansion card is provided with a combination part and a positioning part which are positioned at two opposite ends. The hard disk connector combined with the adapter plate module can be inserted into the combining part of the hard disk expansion card.

The first fixing unit is used for positioning the hard disk expansion card on the adapter plate of the adapter plate module. The first fixing unit comprises a first nut fixedly arranged on the plate body of the adapter plate and corresponding to the positioning part of the hard disk expansion card, and a first locking piece detachably locked into the first nut. The first locking piece is locked into the first nut and can make the first locking piece force the corresponding positioning part of the hard disk expansion card towards the direction of the first nut.

The hard disk system and the main board are accommodated in a shell, the shell is provided with a hard disk installation area positioned in the middle and two heat dissipation wind flow areas positioned at two opposite sides of the hard disk installation area, a connecting plate of the connecting plate device is positioned in the shell, a connector module of the connecting plate device corresponds to the hard disk installation area, the adapter plate module is longitudinally inserted into the hard disk installation area of the shell, a golden finger unit of the adapter plate unit is inserted into and connected with the connector module, and the golden finger unit of the adapter plate unit is electrically connected with the connector module which is inserted into and connected with the golden finger unit of the adapter plate unit.

In particular, the connector module of the connecting plate device is provided with an orthogonal direction slot which is arranged on the connecting plate and can be used for inserting and connecting the golden finger units of the adapter plate unit.

Compared with the prior art, the hard disk system of the utility model can achieve the purpose that each hard disk expansion card can be electrically connected to the combined connector module through the hard disk connector which is connected with the second transmission protocol by inserting the hard disk connector which is combined with each adapter plate module into the combining part of each hard disk expansion card, inserting the golden finger unit of each adapter plate into the combining part to connect each connector module to form an electric connection design and matching the pin definition of each connector module with the first transmission protocol standard and the application of being electrically connected with the golden finger unit of each adapter plate. Furthermore, through the coincidence that the first nut of each first fixing unit is fixedly arranged on the plate body of the corresponding adapter plate, only each first locking piece is locked into the corresponding first nut and the positioning part of the corresponding hard disk expansion card is forced to be tightly pressed in the direction of the corresponding first nut, so that the corresponding hard disk expansion card is effectively fixed.

Drawings

Other features and advantages of the utility model will be apparent from the following description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is an exploded perspective view of a hard disk system according to an embodiment of the present utility model installed in a server;

FIG. 2 is an exploded perspective view illustrating the connection relationship between a connector board arrangement and a connector board module in this embodiment;

FIG. 3 is a perspective view, aided by the illustration of FIG. 2;

FIG. 4 is a perspective exploded view illustrating the combination of an M.2 expansion card and the adapter module and the combination of the adapter module and a housing module in this embodiment; and

Fig. 5 is a perspective view, which assists in explaining fig. 4.

Description of the embodiments

Before the present utility model is described in detail, it should be noted that in the following description, like elements are denoted by the same reference numerals.

Referring to fig. 1, 2, 3, 4 and 5, an embodiment of the hard disk system of the present utility model is installed in a server 90 and is suitable for electrically connecting to a motherboard (not shown). The hard disk system comprises a connecting plate device 1, a plurality of shell modules 2, a plurality of adapter plate modules 3 which are detachably combined on the shell modules 2 and can be inserted to connect the connecting plate device 1, a plurality of hard disk expansion cards 4 which can be inserted to combine the adapter plate modules 3, and a plurality of first fixing units 5 for positioning the M.2 expansion cards 4 on the adapter plate modules 3.

The connection board device 1 includes a connection board 11 electrically connected to the motherboard, and a plurality of connector modules 12 disposed on the connection board 11. The pin definition of each connector module 12 conforms to a first transmission protocol, such as PCie, SFF-TA-1002 or M.2, but not limited thereto, and the first transmission protocol is exemplified by SFF-TA-1002.

Each housing module 2 includes a base plate 21 and two side plates 22 extending from opposite sides of the base plate 21 in a direction away from the base plate 21. The base plate 21 and the side plate 22 together define an accommodating space 23.

The adapter plate module 3 can be plugged with the connector module 12 connected to the connecting plate device 1. Each adapter board module 3 includes an adapter board 31 detachably fixed on the substrate 21 of any housing module 2, and a hard disk connector 32 disposed on the adapter board 31, where the hard disk connector 32 conforms to a second transmission protocol, for example, but not limited to, PCie, SFF-TA-1002, or m.2, and the second transmission protocol is described below as an example in which the second transmission protocol is m.2 and the hard disk connector is an example of the m.2 connector 32, and the hard disk expansion card 4 is described as an example in which the hard disk expansion card 4 is an example of the m.2 expansion card 4. Each adapter plate 31 has a plate body 311 fixed on the base plate 21 and located in the accommodating space 23, and a golden finger unit 312 extending from the plate body 311 toward the connector assembly 1 and capable of being inserted into any connector module 12 connected to the connector assembly 1. The golden finger unit 312 of each adapter plate 31 is electrically connected with the connector module 12 inserted therein. Each m.2 connector 32 is disposed on the corresponding board body 311 and extends from the corresponding board body 311 in a direction away from the substrate 21 of the housing module 2.

The m.2 expansion card 4 is plugged with an m.2 connector 32 that is combined with the patch panel module 3. Each m.2 expansion card 4 has a coupling portion 41 and a positioning portion 42 at opposite ends. The combining part 41 of each m.2 expansion card 4 can be inserted with the m.2 connector 32 combined with any one of the adapter board modules 3.

The first fixing unit 5 is used for positioning the m.2 expansion card 4 on the adapter plate 31 of the adapter plate module 3. Each first fixing unit 5 includes a first nut 51 fixed on the board body 311 of the corresponding adapter board 31 and corresponding to the positioning portion 42 of each m.2 expansion card 4, and a first locking member 52 detachably locked into the first nut 51. The first locking piece 52 is locked into the first nut 51 and can make the first locking piece 52 press the corresponding positioning portion 42 of the m.2 expansion card 4 toward the first nut 51. In this embodiment, the number of the m.2 expansion cards 4 is a plurality of, so that the plurality of m.2 expansion cards 4 are fixed to the plurality of adapter board modules 3 and combined with the plurality of housing modules 2 by matching with the plurality of first fixing units 5, but not limited thereto, the number of the m.2 expansion cards 4 can be designed according to the actual use requirement, so that the implementation that one m.2 expansion card 4 is fixed to one adapter board module 3 and combined with one housing module 2 by matching with one first fixing unit 5 is enough. In particular, in the present embodiment, each adapter plate module 3 meets the specification of an e1.S Ruler type solid state disk module (rule SSD), and each housing module 2 is an e1.S Carrier. In other words, each adapter plate module 3 has the shape of e1.S SSD in the EDSFF specification, so that it can be directly assembled to the existing housing module 2 (e 1.S Carrier), but not limited thereto. In this embodiment, the connection board 11 of the connection board device 1 is already pre-installed in the server 90 and electrically connected to the motherboard in the server 90, so that the connector module 12 disposed on the connection board 11 can be plugged by the golden finger unit 312 of the patch panel module 3 to electrically connect the patch panel module 3, and further electrically connect the m.2 expansion card 4 plugged with the m.2 connector 32 combined with the patch panel module 3, so as to perform signal and data transmission.

During assembly, the assembly operation of the m.2 expansion card 4 is performed first, and for convenience of explanation, the following description is made by installing an m.2 expansion card 4 on an adapter board module 3 by using a first fixing unit 5. First, the coupling portion 41 of the m.2 expansion card 4 is inserted into the m.2 connector 32 coupled to the adapter board module 3, and the positioning portion 42 of the m.2 expansion card 4 abuts against the first nut 51 of the first fixing unit 5. Then, the first locking piece 52 is locked into the first nut 51, and the first locking piece 52 is pressed towards the first nut 51 to tighten the positioning portion 42 of the corresponding m.2 expansion card 4, at this time, the first fixing unit 5 has fixedly combined the m.2 expansion card 4 to the adapter board module 3, so as to complete the assembly operation of the m.2 expansion card 4. In particular, in the present embodiment, the positioning portion 42 of each m.2 expansion card 4 has a concave edge 421, and the concave edge 421 of each positioning portion 42 can abut against the first nut 51 of the corresponding first fixing unit 5 and can be pressed by the corresponding first locking member 52 toward the corresponding first nut 51. In short, when the m.2 expansion card 4 is inserted into the m.2 connector 32, the concave edge 421 of the positioning portion 42 of the m.2 expansion card 4 corresponds to the first nut 51, and when the first locking member 52 of the first fixing unit 5 is locked into the first nut 51, the first locking member 52 is pressed against the concave edge 421 of the positioning portion 42 as shown in fig. 5, but not limited thereto.

Next, the assembly operation of the interposer module 3 is performed, and for convenience of description, the assembly operation is performed by installing one interposer module 3 in one housing module 2, and only the board body 311 of the interposer 31 of the interposer module 3 is fixed to the substrate 21 of the housing module 2. Here, it is to be specifically noted that in the present embodiment, the second fixing units 6 for fixing the adapter plate 31 of the adapter plate module 3 to the base plate 21 of the housing module 2 are further included, each second fixing unit 6 includes a plurality of nut posts 61 fixedly coupled to the base plate 21 of the corresponding housing module 2, and a plurality of second locking members 62 detachably penetrating the plate body 311 of the corresponding adapter plate 31 and locking into the nut posts 61, and the second locking members 62 of each second fixing unit 6 are penetrated through the corresponding plate body 311 and locking into the corresponding nut posts 61, so that the corresponding plate body 311 is fixed to the base plate 21 of the corresponding housing module 2. In brief, as shown in fig. 4 and 5, the board body 311 of the adapter board 31 is fixed on the base board 21 of the housing module 2 by the second fixing unit 6, but not limited thereto. After the above-mentioned assembly operation of the m.2 expansion card 4 and the above-mentioned assembly operation of the interposer module 3 are completed, finally, any connector module 12 connected to the connection board device 1 may be inserted into the gold finger unit 312 of the interposer 31. In addition, the pin definition of each connector module 12 conforms to the SFF-TA-1002 standard and conforms to the EDSFF standard and shares the same usage pattern of the edge connector pins (SFF-TA-1002), so that inserting the golden finger unit 312 of the interposer module 3 conforming to the EDSFF form standard can directly form an electrical connection with the interposer module 3 for signal communication and data transmission, but is not limited thereto.

By inserting the M.2 connector 32 of each M.2 expansion card 4 into the combining part 41 of each adapter board module 3 and inserting the golden finger unit 312 of each adapter board 31 to connect each connector module 12 to form an electric connection, and matching the stitch definition of each connector module 12 with the SFF-TA-1002 standard and the application of being electrically connected with the golden finger unit 312 of each adapter board 31, the M.2 expansion card 4 can be electrically connected to the combined connector module 12 through the golden finger unit 312 of the corresponding adapter board 31 by the M.2 connector 32 connected with the M.2 expansion card 4. Furthermore, by the simple concept that the first nut 51 of each first fixing unit 5 is fixedly arranged on the plate body 311 of the corresponding adapter plate 31, only each first locking piece 52 is locked into the corresponding first nut 51 and the corresponding positioning portion 42 of the m.2 expansion card 4 is forced to be tightly pressed towards the corresponding first nut 51, so that the corresponding m.2 expansion card 4 is effectively fixed.

Here, it is to be noted that, in the present embodiment, the housing 92 has a hard disk mounting area 921, and two heat dissipation airflow areas 922 located on opposite sides of the hard disk mounting area 921, the connection board 11 of the connection board device 1 is located in the housing 92, and the connector module 12 of the connection board device 1 corresponds to the hard disk mounting area 921. Each of the adapter plate modules 3 is inserted longitudinally into the hard disk mounting area 921 of the casing 92 as shown in fig. 1, and one of the connector modules 12 connected is inserted into the gold finger unit 312 of each of the adapter plate 31 units, and the gold finger unit 312 of each of the adapter plate 31 units is electrically connected to the connector module 12 connected to the gold finger unit. That is, in the hard disk system of the present embodiment, as shown in fig. 1, the adapter board module 3 is assembled in the hard disk installation area 921 of the casing 92 of the server 90, so as to achieve a smaller occupied area, and the heat dissipation air flow areas 922 on two sides of the casing 92 can provide more heat dissipation air holes, so that the heat dissipation efficiency of the entire system of the 1U server 90 is effectively improved, but not limited thereto.

It should be noted that, in the present embodiment, each connector module 12 of the connection board apparatus 1 has an orthogonal slot 121 disposed on the connection board 11 for inserting and connecting the golden finger units 312 of any one of the connection board 31 units. In short, each connector module 12 is in the form of an orthogonal slot 121 as shown in fig. 2, so that each adapter module 3 is longitudinally inserted into the hard disk mounting area 921 of the casing 92 and one of the orthogonal slots 121 is inserted into the golden finger unit 312 of each adapter 31 unit, thereby effectively reducing the occupied space, but not limited thereto. In addition, in the present embodiment, the connection board device 1 further includes a plurality of motherboard connecting modules 13 disposed on the connection board 11 and electrically connected to the motherboard and conforming to a third transmission protocol, and each motherboard connecting module 13 is connected to the orthogonal direction slots 121 of two connector modules 12, but not limited thereto. Incidentally, in the present embodiment, each motherboard connecting module 13 is an MCIO connector, but not limited thereto.

In summary, in the hard disk system of the present utility model, the connection portion 41 of each m.2 expansion card 4 is inserted with the m.2 connector 32 of each adapter board module 3 and is connected with each connector module 12 through the golden finger unit 312 of each adapter board 31 to form an electrical connection, and the application of the pins of each connector module 12 conforming to the SFF-TA-1002 standard and being electrically connected with the golden finger unit 312 of each adapter board 31 is matched, so that each m.2 expansion card 4 can be electrically connected to the connected connector module 12 through the golden finger unit 312 of the corresponding adapter board 31 through the connected m.2 connector 32. Furthermore, by the simple concept that the first nut 51 of each first fixing unit 5 is fixedly arranged on the plate body 311 of the corresponding adapter plate 31, only the first locking piece 52 is locked into the corresponding first nut 51 and the corresponding positioning portion 42 of the m.2 expansion card 4 is pressed towards the corresponding first nut 51, so that the corresponding m.2 expansion card 4 is effectively fixed, and the purpose of the utility model can be truly achieved.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. A hard disk system, comprising:

the connecting plate device comprises a connecting plate electrically connected with a main board and a plurality of connector modules arranged on the connecting plate, and the pin definition of each connector module accords with a first transmission protocol standard;

each shell module comprises a base plate and two side plates extending from two opposite sides of the base plate to a direction away from the base plate, and the base plate and the side plates jointly define an accommodating space;

each adapter plate module comprises an adapter plate detachably fixed on a base plate of any shell module, and a hard disk connector arranged on the adapter plate and conforming to a second transmission protocol, each adapter plate is provided with a plate body fixed on the base plate and positioned in the accommodating space, and a golden finger unit extending from the plate body to the direction of the connecting plate device and capable of being inserted into any connector module connected with the connecting plate device, the golden finger unit of each adapter plate is electrically connected with the connector module inserted into the golden finger unit, and each hard disk connector is arranged on the corresponding plate body and extends from the corresponding plate body to the direction away from the base plate of the shell module;

the hard disk expansion cards are provided with a combination part and a positioning part which are positioned at two opposite ends, and the combination part of each hard disk expansion card can be inserted with the hard disk connector which is combined with any adapter plate module; and

The first fixing units are used for fixing the hard disk expansion cards on the adapter plates of the adapter plate modules, each first fixing unit comprises a first nut fixedly arranged on the plate body of the corresponding adapter plate and corresponding to the positioning part of each hard disk expansion card, and a first locking piece detachably locked into the first nut, wherein the first locking piece is locked into the first nut and can enable the first locking piece to force the positioning part of the corresponding hard disk expansion card towards the direction of the first nut.

2. The hard disk system according to claim 1, wherein the hard disk system and the motherboard are accommodated in a housing, the housing has a hard disk mounting area and two heat dissipation wind flow areas located at opposite sides of the hard disk mounting area, the connection board of the connection board device is located in the housing and the connector modules of the connection board device correspond to the hard disk mounting area, each of the connection board modules is longitudinally inserted into the hard disk mounting area of the housing and the golden finger unit of each of the connection board units is inserted into one of the connector modules, and the golden finger unit of each of the connection board units is electrically connected with the connector module into which the golden finger unit of each of the connection board units is inserted.

3. The hard disk system according to claim 2, wherein each connector module of the connection board device has an orthogonal direction slot which is disposed on the connection board and into which the golden finger unit of any one of the connection board units is inserted and connected.

4. The hard disk system according to claim 3, wherein the connection board device further comprises a plurality of motherboard connecting modules disposed on the connection board and electrically connected to the motherboard and conforming to a third transmission protocol, each motherboard connecting module connecting the orthogonal direction slots of two of the connector modules.

5. The hard disk system of claim 1, further comprising a plurality of second fixing units for fixing the adapter plate of the adapter plate module to the base plate of the housing module, each second fixing unit including a plurality of nut posts fixedly coupled to the base plate of the corresponding housing module, and a plurality of second locking members detachably penetrating the plate body of the corresponding adapter plate and locking into the nut posts, the second locking members of each second fixing unit being penetrated through the corresponding plate body and locking into the corresponding nut posts to fix the corresponding plate body to the base plate of the corresponding housing module.

6. The hard disk system of claim 1, wherein the positioning portion of each hard disk expansion card has a concave edge, and the concave edge of each positioning portion can abut against the first nut of the corresponding first fixing unit and can be pressed in the direction of the corresponding first nut by the corresponding first locking member.

7. The hard disk system of claim 1, wherein each adapter plate module is compliant with a specification of an e1.S Ruler solid state disk module (rule SSD).

8. A hard disk system, comprising:

the connecting plate device comprises a connecting plate electrically connected with the main board and a connector module arranged on the connecting plate, and the pin definition of the connector module accords with a first transmission protocol standard;

the shell module comprises a base plate and two side plates which extend from two opposite sides of the base plate to a direction away from the base plate, and the base plate and the side plates jointly define an accommodating space;

the adapter plate module comprises an adapter plate which is detachably combined on the shell module and is detachably inserted into the connector module, the adapter plate module comprises an adapter plate which is detachably fixed on a substrate of the shell module, and a hard disk connector which is arranged on the adapter plate and accords with a second transmission protocol, the adapter plate is provided with a plate body which is fixed on the substrate and is positioned in the accommodating space, and a golden finger unit which extends from the plate body to the direction of the connecting plate device and can be inserted into the connector module connected with the connecting plate device, the golden finger unit of the adapter plate is electrically connected with the connector module which is inserted into the adapter plate, and the hard disk connector is arranged on the plate body and extends from the plate body to the direction far away from the substrate of the shell module;

the hard disk expansion card is provided with a combining part and a positioning part which are positioned at two opposite ends, and the combining part of the hard disk expansion card can be inserted with the hard disk connector combined with the adapter plate module; and

The first fixing unit comprises a first nut fixedly arranged on the plate body of the adapter plate and corresponding to the positioning part of the hard disk expansion card, and a first locking piece detachably locked into the first nut, wherein the first locking piece is locked into the first nut and can enable the first locking piece to force the positioning part of the corresponding hard disk expansion card to be tightly pressed towards the direction of the first nut.

9. The hard disk system according to claim 8, wherein the hard disk system and the motherboard are accommodated in a housing, the housing has a hard disk installation area in the middle and a heat dissipation airflow area on two opposite sides of the hard disk installation area, the connection board of the connection board device is located in the housing and the connector module of the connection board device corresponds to the hard disk installation area, the adapter board module is longitudinally inserted into the hard disk installation area of the housing and the golden finger unit of the adapter board unit is inserted into and connected with the connector module, and the golden finger unit of the adapter board unit is electrically connected with the connector module in which the golden finger unit of the adapter board unit is inserted.

10. The hard disk system of claim 9, wherein the connector module of the connection board device has an orthogonal slot disposed on the connection board for inserting and connecting the golden finger unit of the adapter board unit.