TWM636406U - Expansion bay assembly, computer system, and expansion bay for computer system - Google Patents

Abstract

An expansion bay for a computer system having a rotatable fastening mechanism is disclosed. The expansion bay includes a bay housing having two facing side walls, a front open end and a bottom panel. A front tab and a rear tab extend from the interior of one of the side walls. A tray supporting an expansion component has a guide block with a threaded aperture. The tray may be positioned between an open position and a closed position. The rotatable fastener mechanism moves the tray into and out of the bay housing. A rod is inserted through apertures of the first tab and the second tab, allowing free rotation of the rod. The rod includes a threaded exterior section to rotationally engage the threaded aperture of the guide block. A knob is attached to an end of the rod to allow a user to rotate the rod and move the tray.

Description

Expansion bracket assembly, computer system and expansion bracket for computer system

The present disclosure generally relates to cases for computing devices. More specifically, aspects of the present disclosure relate to a rotatable fastener mechanism that allows for simplified and quick positioning of a tray for an expansion unit for a computer system.

Computer systems such as desktop computers, blade servers, rack servers, etc. are heavily used in various applications. High-demand applications such as network-based systems, data centers, or high-density finite element simulations of the hardware that drives computing systems require servers with specific capabilities. Modern servos are usually designed to provide flexibility in features and components. One method is to design expansion brackets to facilitate the installation of components such as expansion cards, storage devices, and processor boards, so as to enhance the basic functions of the server. Expansion bays typically include trays that hold components. To facilitate servicing and replacing parts, many trays are accessible without moving the actual server chassis. For example, some trays may slide out of the chassis, allowing components to be installed or removed. Once installed, the tray may be pushed back into the case.

Currently, pallets require a series of mechanical mechanisms to ensure that the pallet is locked in place. For example, some trays have a rotatable lever that allows the operator to move the lever to an open position to allow the tray to slide out of the cabinet and access the tray. When the pallet is loaded, it is pushed into the cabinet and the lever is rotated to the closed position. Such ejector pins are effective, however, they are relatively complex and require a certain amount of space. How to achieve easy servicing in the limited space available without the need for an eject bar design on the I/O tray. Thus, such a mechanism can simplify the design of the pallet while maintaining the same maintainability required for operation.

Therefore, there is a need for a tray that can be easily moved between an open position and a closed position. There is a further need for an easy tray mechanism that allows the tray to be securely secured in the bracket. There is a further need for a tight tray positioning mechanism.

One example disclosed is an expansion bracket assembly including a bracket housing having two opposing side walls, an open front end, and a bottom plate. A first tab having an aperture extends from the interior of one of the facing side walls. The tray has guide blocks with screw holes installed between the opposite side walls for supporting the expansion components. The tray is configured to move between an open position and a closed position. A rotatable fastener mechanism moves the tray between an open position and a closed position. The rotatable fastener mechanism includes a rod that is inserted through the hole of the first tab and rotationally engages the threaded hole of the guide block of the tray.

Another embodiment of the example expansion bracket assembly is one that includes a second tab extending from the interior of one of the opposing side walls. The second tab includes a hole, and the rod is inserted through the hole of the second tab. Another embodiment is that the first tab is located near the front open end of the bracket and the second tab is located near the closed end of the bracket, opposite the open end. Another embodiment is that the fastener mechanism includes a knob with a handle on one end of the rod. Another embodiment is that the tray includes alignment features that cooperate with the expansion components. Another embodiment is that the expansion component is a peripheral component interconnect express (PCIe) compliant device. Another embodiment is that the expansion member includes an edge connector that mates with a receptacle extending from an end wall of the bracket.

Another disclosed example is a computer system including a chassis having two side walls and a front, and a motherboard positioned in the chassis between the two side walls. Bracket housing for securing expansion units mounted on the front of the chassis. The bracket housing includes two opposite side walls, a front open end and a bottom plate connecting the two opposite side walls. The bracket housing includes a first tab having an aperture extending from an interior of one of the opposing side walls. A tray with guide blocks with screw holes is mounted between the facing side walls to support the expansion unit. The tray is movable between an open position and a closed position. A rotatable fastener mechanism moves the tray between an open position and a closed position. The rotatable fastener mechanism includes a rod inserted through the hole of the first tab and rotationally engaging the threaded hole of the guide block of the tray.

A further embodiment of the example computer system is one in which the computer system is one of a storage server or an application server. Another embodiment is that the bracket includes a second tab extending from the interior of one of the opposing side walls. The second tab includes a hole, and the rod is inserted through the hole of the second tab. Another embodiment is that the first tab is located near the open front end of the bracket and the second tab is located near the closed end of the bracket, opposite the open front end. Another embodiment is that the fastener mechanism includes a knob with a handle on one end of the rod. Another embodiment is that the tray includes alignment features that cooperate with the expansion components. Another embodiment is that the expansion unit is a Peripheral Component Interconnect Express (PCIe) compliant device. Another embodiment is that the expansion member includes an edge connector that mates with a receptacle extending from an end wall of the bracket.

Another example disclosed is an expansion bay for a computer system. The expansion bracket includes a bracket housing having two opposing side walls, a front open end, a rear end, and a bottom plate. A first front tab having an aperture extends from the interior of one of the facing side walls near the front open end. A second rear tab having an aperture extends from the interior of one of the opposing side walls near the rear end. A tray with guide blocks with screw holes fits between the side walls to support the expansion unit. The tray is configured to move between an open position and a closed position. The fastener mechanism is operable to move the tray between an open position and a closed position by rotation of the fastener mechanism. The fastener mechanism includes a rod inserted through the holes of the first and second tabs, allowing the rod to rotate freely. The rod includes a threaded outer section between the first tab and the second tab to rotatably engage the threaded hole of the guide block of the tray. The fastener mechanism includes a knob attached to one end of a rod extending from the front open end of the cradle housing.

The above novel content is not intended to represent each implementation or every aspect of the present disclosure. Rather, the foregoing novel disclosure merely provides examples of some of the novel aspects and features set forth herein. The above-mentioned features and advantages and other features and advantages of the present disclosure will become apparent from the following detailed description of representative embodiments and modes for carrying out the present disclosure when taken in conjunction with the attached drawings and claims.

The present disclosure can be embodied in many different forms. Representative embodiments are shown in the drawings and will be described in further detail herein. The present disclosure is an example or illustration of the principles of the disclosure and is not intended to limit the broad aspects of the disclosure to the implementations shown. In this sense, for example, elements and limitations disclosed in the Abstract, Novelty and Specification sections but not expressly stated in the claims should not be incorporated, individually or collectively, by implication, inference or otherwise. within the scope of the patent. For the purposes of this specification, unless otherwise stated, the singular encompasses the plural and vice versa. The word "including" means "including without limitation". In addition, similar words such as "about", "almost", "substantially" and "approximately" may be used herein, for example, to mean "at ”, “near”, “nearly at”, “within 3-5% of” or “within acceptable manufacturing tolerances” ” or any logical combination thereof.

The present disclosure relates to a rotatable fastener mechanism that allows a tray for an expansion unit to be easily positioned in a bracket between an open position and a closed position. One of the facing side walls of the bracket has two mounting tabs for hanging the rotatable rod. One end of the rod is located outside the cradle housing and is attached to a knob-shaped screw fastener. The screw fastener can be rotated by the user, thereby causing the rod to rotate. The tray includes a linear traverse block that engages the threaded section of the rod. Thus, the traversing mass may traverse relative to the rod between an open position and a closed position as the rod rotates. Thus, the attached tray is guided between the open position and the closed position by means of the rotational movement of the lever.

FIG. 1A is a perspective view of a computer system or computer device such as storage server 100 . The storage server 100 includes a chassis 110 having two side walls 112 and 114 . Side walls 112 and 114 are connected by floor 116 . The motherboard 120 is mounted between the side walls 112 and 114 . The motherboard 120 is fixed between the front panel 122 and the rear panel 124 of the chassis 110 . The motherboard 120 includes one or more components, such as a power supply, a processor (such as a central processing unit), a network interface card, a memory device, and the like. A set of fan modules 130 is located near the rear of the chassis 110 . The fan module 130 generates airflow between the side walls 112 and 114 to help cool the components of the storage server 100 . The fan module 130 is configured to establish the direction of the incoming airflow and the outgoing airflow so that both the incoming airflow and the outgoing airflow flow in the same direction.

In this example, the chassis 110 holds an array of hard disk drives (hard disk drives, HDDs) 140 arranged in rows. In this example, there are two parallel independent hard disk groups connected to the motherboard 120 . Each group has six rows, and each row has six independent hard disks 140, a total of 72 hard disk drives. In this example, the hard drive can be replaced by a solid state drive (SSD). The storage control board is contained in the housing between the two sets of independent hard disks 140 .

Front panel 122 includes two bracket assemblies 150 that allow insertion of expansion component formats. In this example, two bracket assemblies 150 are provided, but any number of bracket assemblies 150 may be supported by different configurations of the front panel 122 . Each of the bay assemblies 150 allows access to expansion components, such as input/output (I/O) modules that include peripheral component interconnect express (PCIe) I/O board for mating connector receptacle 226 (shown in Figure 2). For example, there may be a power button/reset button/debug universal serial bus (USB) component on the front of an I/O board of this size. Other types of computer devices (such as application servers) may have fewer storage devices and more bay assemblies 150 for more expansion cards. The example bracket assembly using a rotatable fastener mechanism may be used with any suitable computing device, for example, storage devices such as just a bunch of disks (JBODs), switches, or the like.

FIG. 1B shows the storage server 100 with one of the bracket assemblies 150 in an open state. The open state allows the expansion unit 160 to be inserted on the expansion tray. The expansion unit 160 is designed according to a specific expansion card specification, such as PCIe standard PCIe specification. As will be explained, bracket assembly 150 includes a tray that can be moved to an open position by a rotatable fastener mechanism. Once the tray is opened, an expansion unit having a compatible expansion card specification, such as the expansion unit 160 , can be inserted for installation in the storage server 100 . The tray can then be moved to the closed position by the rotatable fastener mechanism. When the tray is in the closed position, the expansion unit 160 can be connected to the motherboard 120 and provide additional functions for the storage server 100 .

FIG. 2 is an exploded perspective view of one of the bracket assemblies 150 of FIGS. 1A-1B installed in a computer system such as storage server 100 . Figure 3 is a perspective view of one of the bracket assemblies 150 of Figures 1A-1B. Figure 4 is a close-up perspective view of the example fastening and tray positioning mechanism of Figures 1A-1B. FIG. 5 is an exploded perspective view of an example fastening and tray positioning mechanism of the bracket assembly 150 .

Referring to FIGS. 2 to 5 , the bracket assembly 150 has a bracket 200 , a tray 202 and an expansion component 160 . In this example, the expansion unit 160 is a PCIe device, but any device having a size in which the bracket 200 can be fitted may be used. The dimensions of bracket 200 and related components may be adjusted to accommodate other specifications. The bracket 200 has a bracket housing 210 with two opposing side walls 212 and 214 . The facing side walls 212 and 214 are connected to a top panel 216 and a bottom panel 218 . The cradle housing 210 has an open end 220 defined by opposing sidewalls 212 and 214 and a top plate 216 and a bottom plate 218 . A front cross member 224 connects the facing side walls 212 and 214 and defines the open end 220 of the bracket housing 210 . The opposite closed end 222 has a connector receptacle 226 extending therethrough that connects with the expansion component 160 . In this example, connector receptacle 226 is a PCIe type receptacle attached to the bottom surface of host board 120 .

The tray 202 is movable between a closed position that allows the tray housing 210 to fully enclose the tray 202 and an open position that allows the expansion unit 160 to be removed from the tray 202 . The tray 202 can be extended so that nearly the entirety of the tray 202 is accessible on the outside of the cradle housing 210 . When the tray 202 is extended, the expansion member 160 is accessible to the user. In this example, a rotatable fastener mechanism 230 is provided for guiding the tray 202 between an open position and a closed position.

In this example, the rotatable fastener mechanism 230 is engaged with a front tab 240 and a rear tab 242 attached to an interior surface of the facing side wall 212 facing the facing side wall 214 . Two tabs 240 and 242 extend from the inner surface of the facing sidewall 212 . As shown in FIGS. 2-4 , the front tab 240 is located near the open end 220 of the bracket housing 210 and the rear tab 242 is located near the closed end 222 of the bracket housing 210 . Both tabs 240 and 242 have guide holes 244 and 246 respectively extending therethrough. Rotatable fastener mechanism 230 includes a rod 250 that is inserted through guide holes 244 and 246 and is thus held in position parallel to opposing sidewall 212 by tabs 240 and 242 .

The rod 250 has an outer intermediate threaded section 252 between end sections having a smooth outer surface. Thus, when the rod 250 is properly positioned, the rod 250 can rotate freely in the guide hole 244 of the tab 240 and the guide hole 246 of the tab 242 by having a section with a smooth outer surface positioned in the guide holes 244 and 246 . One end of the rod 250 near the closed end 222 includes a cap 254 having a larger diameter than the guide hole 246 of the rear tab 242 to prevent the rod 250 from being pulled out of the guide hole 246 . The opposite end of the rod 250 near the open end 220 includes a screw fastener assembly 260 .

Screw fastener assembly 260 includes a cylindrical support 262 having an open end. Cylindrical support 262 may slide over opposite ends of rod 250 . The cylindrical support 262 has a larger diameter than the guide hole 244 of the front tab 240 and, when attached to the end of the rod 250 , prevents the rod 250 from being pulled out of the guide hole 244 . Cylindrical support 262 has a closed end attached to a winged knob member 264 that can be grasped and rotated by a user to move tray 202 between an open position and a closed position.

Tray 202 has a generally planar floor 270 with alignment features 272 , such as pins for engaging expansion unit 160 . Base plate 270 has a leading edge and an opposite trailing edge. In this example, the expansion unit 160 will have mounting pins 272 to position the slots of the expansion unit 160 relative to the base plate 270 . Although two pins are used in this example, any number of pins or other mechanisms may be used to engage and align the position of the expansion unit 160 on the chassis 270 . Additionally, base plate 270 may have slots as an alignment feature, and expansion member 160 may have pins that fit within the slots.

The bottom panel 270 is connected to side panels 274 that are generally parallel to the facing side walls 214 of the cradle housing 210 and extend between the front and rear edges of the bottom panel 270 . The side panels 274 are also used to position the expansion unit 160 relative to the tray 202 . A linear traverse guide block 276 is mounted on the open side of the bottom plate 270 opposite the side plate 274 . Guide blocks 276 are located near the rear edge of tray 202 . The guide block 276 has a bore 278 therethrough and is generally cylindrical. Bore 278 has a threaded interior surface that engages threaded section 252 of rod 250 .

In this example, the expansion unit 160 has a circuit board 280 mounted on a housing 282 having a front block 284 . One edge of the circuit board 280 is fixed adjacent to the front block 284 . An opposite edge of the circuit board 280 includes an edge connector 286 that can be plugged into a corresponding receptacle 226 that is connected to the bottom surface of the motherboard 120 . The circuit board 280 has electronic components such as a controller, memory devices, interfaces, and circuits.

The lever 250 can be rotated by a user grasping the knob member 264 and rotating the knob member 264 . When the rod 250 is rotated in one direction (eg, clockwise), the threaded section 252 engages the internal threads of the bore 278 of the linear traversing guide block 276 . Accordingly, the linear traverse guide block 276 moves relative to the rod 250 . Accordingly, the attached tray 202 is moved into the rack 200 by the movement of the guide block 276 .

When the rod 250 is rotated in the opposite direction (counterclockwise), the threaded section 252 of the rod 250 engages the internal threads of the bore 278 . The linear traversing guide block 276 thus moves relative to the rod 250 and the tray 202 moves away from the carriage 200 . Accordingly, the linear traversing guide 276 is movable between a fully closed position in which the linear traversing guide 276 abuts against the rear tab 242 and a fully open position. In the closed position, the rear tab 242 thus stops further movement of the linear traversing guide block 276 and the attached tray 202 towards the rear end 222 of the carriage 200 . In the open position, the front tab 240 stops the movement of the linear traverse guide 276 toward the open end 220 of the bracket 200 .

FIG. 6 is a perspective view of the example tray 202 of FIGS. 2-5 in a fully open, extended position. In this example, the linear traversing guide block 276 abuts the front tab 240 extending from the facing sidewall 212 of the cradle housing 210 . With the tray 202 fully extended, the expansion unit 160 can be inserted into the tray 202 by aligning the slots with the guide pins 272 on the bottom plate 270 . Alternatively, the expansion component 160 may be removed from the tray 202 in the open position. Once the expansion member 160 is positioned on the tray 202 through the slots that cooperate with the alignment features 272 in FIG. 5 , the tray 202 can be moved to the closed position by the rotary rod 250 via the knob member 264 .

A user can grasp the knob member 264 and rotate the lever 250 in a clockwise direction. The threaded section 252 engages the internal threads of the bore 278 of the guide block 276 and translates the linear movement of the guide block 276 . The tray 202 is thus moved into the carriage 200 . The lever 250 may be rotated clockwise until the guide block 276 contacts the rear tab 242 . When guide block 276 contacts rear tab 242 , edge connector 286 is fully inserted into receptacle 226 and allows electrical signal transmission between expansion unit 160 and components on motherboard 120 .

FIG. 7 is a perspective view of the example tray 202 in the fully closed position with the linear traversing guide block 276 in contact with the rear tab 242 . In this position, the edge connector 286 of the expansion component 160 is plugged into the receptacle 226 extending through the closed end 222 . Tray 202 is completely contained within bracket 200 , and expansion unit 160 is electrically coupled to components of motherboard 120 . As explained above, to open the tray 202 , the user rotates the knob member 264 causing the lever 250 to rotate and move the linear traverse guide 276 and the attached tray 202 and expansion cards 160 out of the tray 200 . Edge connector 286 is pulled out of receptacle 226 during movement of tray 202 .

The rotatable fastener mechanism 230 described above allows easy servicing of expansion cards, such as the expansion cards 160 in the tray 202 . The bracket 200 and the rotatable fastener mechanism 230 can be mounted in the limited space available on the side wall of the bracket 200 . The rotatable fastener mechanism 230 allows for a simplified tray design that requires only alignment features such as pins to engage and disengage mating features of the expansion component 160 . Rotatable fastener mechanism 230 also does not require any special tools to secure tray 202 and expansion unit 160 in place in bracket assembly 150 , or to expand tray 202 and access expansion unit 160 .

As used in this application, the terms "component", "module", "system" and the like generally refer to a computer-related entity, which can be hardware (such as a circuit), A combination of hardware and software, software, or an entity associated with a computing machine that has one or more specified functions. For example, a component may be, but is not limited to being, a process running on a processor (eg, a digital signal processor), a processor, an object, an executable, a thread, a program, and/or a computer. As an illustration, both an application running on a controller and a controller can be a component. One or more components can reside within a process and/or line of execution, and a component can be localized on one computer and/or distributed between two or more computers. In addition, a "device" may take the form of specially designed hardware, for example, general-purpose hardware, storage Software on a computer-readable medium or a combination thereof.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the singular form "a, an, and the" is intended to include the plural forms unless the context clearly dictates otherwise. Furthermore, to the extent that the terms "including and includes", "having, has, and with" or variations thereof are used in the specification and/or claims, these terms are intended to be used similarly to "including (comprising)" is included.

Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. Furthermore, terms (such as those defined in commonly used dictionaries) should be interpreted to have a meaning consistent with their meaning in the context of the relevant field, and will not be interpreted here in an idealized or overly formal sense unless expressly so defined .

While various embodiments of the present disclosure have been described above, it should be understood that they have been presented by way of example only, and not limitation. While the disclosure has been illustrated and described with respect to one or more implementations, equivalent alterations and modifications will occur or become known to others having ordinary skill in the art upon the reading and understanding of this specification and the drawings. Furthermore, although a particular feature of the present disclosure may have been disclosed with respect to only one of several embodiments, such feature may be combined with one or more of the other embodiments if desired and advantageous for any given or particular application. Multiple other feature combinations. Thus, the breadth and scope of the present disclosure should not be limited by any of the above-described embodiments. Rather, the scope of the present disclosure should be defined in accordance with the appended claims and their equivalents.

100: storage server 110: Chassis 112,114: side wall 116: Bottom plate 120: Motherboard 122: Front panel 124: Rear panel 130: Fan module 140: hard disk 150: Bracket assembly 160: Expansion parts 200: bracket 202: tray 210: bracket shell 212,214: opposite side wall 216: top plate 218: Bottom plate 220: Open end 222: Backend 224: Front beam 226: socket 230: Rotatable Fastener Mechanism 240,242: tabs 244,246: Pilot holes 250: Rod 252: section 254: hat 260: screw fastener assembly 262: Cylindrical support 264: Knob component 270: Bottom plate 272: Counterpoint Features 274: side panel 276: guide block 278: hole 280: circuit board 282: shell 284: front block 286:Edge connector

The present disclosure is better understood from the following description of embodiments when read in conjunction with the accompanying drawings. FIG. 1A is a perspective view of a computer system with an example tray structure for securing an expansion unit; FIG. 1B is a perspective view of a computer system with an open example tray structure for securing an expansion unit; FIG. 2 is an isolated perspective view of an example rotatable fastener mechanism and tray partially inserted into a bay of the computer system of FIG. 1A; Figure 3 is a perspective view of an example rotatable fastener mechanism and tray partially inserted into a bay of the computer system of Figure 1A; Figure 4 is a close-up perspective view of an example rotatable fastener mechanism; Figure 5 is an exploded perspective view of an example tray and rotatable fastener mechanism; Figure 6 is a perspective view of an example rotatable fastener mechanism and tray fully extended from the bracket; and Figure 7 is a perspective view of an example tray in a fully closed position. While the disclosure is susceptible to various modifications and alternative forms, some representative embodiments have been shown in the drawings by way of example and will be further described herein. It should be understood, however, that the disclosure is not intended to be limited to the particular forms disclosed. On the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the disclosure as defined by the appended claims.

100: storage server

110: Chassis

112,114: side wall

116: Bottom plate

120: Motherboard

122: Front panel

124: Rear panel

130: Fan module

140: hard disk

150: Bracket assembly

Claims (10)

An expansion bracket assembly, comprising: a bracket shell with two opposite side walls, a front open end and a bottom plate; a first protrusion with a first hole, the first protrusion extending from the two pairs To the inside of one of the side walls; a tray with a guide block with a screw hole, the guide block is installed between the two opposite side walls for supporting an expansion component, the tray is configured to be in an open position and a closed position; and a rotary fastener mechanism configured to move the tray between the open position and the closed position, the rotary fastener mechanism comprising a rod passing through the first tab The first hole is inserted into and rotatably engaged with the threaded hole of the guide block. The expansion bracket assembly as claimed in claim 1, further comprising a second tab extending from the interior of one of the two opposing side walls, wherein the second tab includes a second hole, and wherein the rod Insert through the second hole of the second protruding piece. The expansion bracket assembly as claimed in claim 1, wherein the tray includes an alignment feature matched with the expansion component. The expansion bracket assembly as claimed in claim 1, wherein the expansion part includes an edge connector, and the edge connector can be extended from A socket on one end wall of the bracket housing is fitted. A computer system, comprising: a case with two side walls and a front end; a motherboard located between the two side walls in the case; and a bracket shell for fixed installation on one of the front ends of the case The expansion part, the bracket housing includes: two opposite side walls; a front open end; a bottom plate connecting the two opposite side walls; a first protruding piece with a first hole, and the first protruding piece extends from the The inside of one of the two opposite side walls; a tray with a guide block with a screw hole, the guide block is installed between the two opposite side walls for supporting the expansion part, the tray can be opened in an open position and a closed position; and a rotary fastener mechanism configured to move the tray between the open position and the closed position, the rotary fastener mechanism comprising a rod passing between the first tab The first hole is inserted into and rotatably engaged with the threaded hole of the guide block. The computer system as claimed in claim 5, wherein the bracket housing includes a second tab on the interior of one of the two opposing side walls, wherein the second tab includes a second hole, and wherein The rod passes through the second hole insertion. The computer system as claimed in claim 5, wherein the tray includes an alignment feature matched with the expansion part. The computer system as claimed in claim 5, wherein the expansion unit includes an edge connector, and the edge connector is matable with a socket extending from an end wall of the bracket housing. An expansion bracket for a computer system, comprising: a bracket shell with two opposite side walls, a front open end, a rear end and a bottom plate; a first front tab with a first hole, the The first front tab extends from the inside of one of the two facing side walls near the front opening; a second rear tab has a second hole, and the second rear tab extends from the two facing side walls. One of the side walls is close to the interior of the rear end; a tray has a guide block with a screw hole, and the guide block is installed between the two opposite side walls for supporting an expansion component. The tray is configured with movable between an open position and a closed position; and a fastener mechanism operable to move the tray between the open position and the closed position in response to rotation of the fastener mechanism, the fastener mechanism comprising a rod, the rod is inserted through the first hole of the first front tab and the second hole of the second rear tab, allowing free rotation of the rod, wherein the rod includes a position between the first front tab and the second rear tab Between the second rear tab A threaded outer section to rotatably engage the threaded hole of the guide block, and the rod further includes a knob attached to an end of the rod extending from the front open end of the bracket housing. The expansion bracket for computer system as described in claim 9, further comprising a socket extending from the rear end of the bracket housing, wherein the expansion component comprises a circuit board with an edge connector, the edge A connector is matable with the receptacle when the tray is in the closed position.

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