TW202201233A - Pcie card hotplug control system and method thereof - Google Patents

Abstract

A PCIe card hotplug control system and a method thereof are provided. PCIe connection interface of PCIe connection card is plugged in PCIe slot of motherboard. Virtual attention button is provided for PCIe connection card from operating system running on motherboard. PCIe interface of PCIe card is plugged in PCIe connection slot of PCIe connection card. Virtual attention button is triggered to notify operating system and control signal is generated by operating system. Control signal is transferred to hotplug control logic module to control each control units of hotplug control logic module. PCIe card is recognized by operating system when each control units of hotplug control logic module are executed. Therefore, the efficiency of providing hotplug of PCIe card may be achieved.

Description

Fast peripheral component interconnect card hot-swap control system and method

A control system and method thereof, in particular to a fast peripheral component interconnection card hot-plug control system and method for providing a fast peripheral component interconnection card hot-plug effect through a fast peripheral component interconnection connection card.

The current fast peripheral component interconnection card does not have the effect of hot swap, which makes it necessary to replace the fast peripheral component interconnection card. The fast peripheral component interconnection slot connected to it needs to be powered off before the fast peripheral component interconnection can be connected. The card is replaced, and the power-off of the fast peripheral component interconnection card and the fast peripheral component interconnection slot connected to it requires shutting down the computer operation, which makes it inconvenient to replace the fast peripheral component interconnection card. The way in which the interconnect card is replaced will not facilitate the detection of the fast peripheral component interconnect slot.

To sum up, it can be seen that in the prior art, the problem of inconvenient replacement of the fast peripheral component interconnection card has existed for a long time. Therefore, it is necessary to propose an improved technical means to solve this problem.

In view of the problem of inconvenient replacement of the fast peripheral component interconnection card in the prior art, the present invention discloses a fast peripheral component interconnection card hot swap control system and method thereof, wherein:

The fast peripheral component interconnection card hot-swap control system disclosed in the present invention includes: a motherboard, a fast peripheral component interconnection card, and a fast peripheral component interconnection card, and the fast peripheral component interconnection and connection card further includes: a fast peripheral component Component interconnection interface, fast peripheral component interconnection slot and hot-plug control logic module, hot-plug control logic module further includes: P3V3_STBY control unit, P3V3 control unit, P12V control unit, P12V_AUX control unit, AUX_IO Control unit, PERST control unit and PRSNT control unit.

The motherboard has a fast peripheral component interconnection slot; the fast peripheral component interconnection card has a fast peripheral component interconnection interface; and the fast peripheral component interconnection connection card is provided by the operating system running on the motherboard. Virtual Attention Button.

The fast peripheral component interconnection connection interface of the fast peripheral component interconnection connection card is used to be inserted into the fast peripheral component interconnection slot; the fast peripheral component interconnection connection slot of the fast peripheral component interconnection connection card is used to provide fast peripheral component interconnection. The peripheral component interconnection interface is inserted, and the fast peripheral component interconnection connection slot provides four x4 bandwidth PCIe signal combinations; and the hot-swappable control logic module of the fast peripheral component interconnection connection card is used to provide according to the control signal. Fast peripheral component interconnect card hot-plug control.

The P3V3_STBY control unit of the hot-plug control logic module is used to control the voltage signal of P3V3_STBY according to the control signal; the P3V3 control unit of the hot-plug control logic module is used to control the voltage signal of the P3V3 according to the control signal; The P12V control unit of the logic module is used to control the voltage signal of P12V according to the control signal; the P12V_AUX control unit of the hot-plug control logic module is used to control a group of P12V_AUX input and output voltage signals respectively according to the control signal; hot-plug The AUX_IO control unit of the pull-out control logic module is used to control the external logic through two sets of input and output signals according to the control signal; the PERST control unit of the hot-plug control logic module is used to control the sequential logic of PERST according to the control signal; and The PRSNT control unit of the hot-plug control logic module is used to control the sequential logic of the PRSNT according to the control signal.

Among them, when the fast peripheral component interconnection connection slot of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnection card, the prompt button is triggered and notified to the operating system, and the operating system generates a control signal and sends it to the hot-swap control logic The module is used to control each control unit in the hot-plug control logic module. After the execution of each control unit in the hot-plug control logic module is completed, the operating system identifies the fast peripheral component interconnect card.

The method for controlling hot-plugging of a fast peripheral component interconnect card disclosed in the present invention includes the following steps:

First, the fast peripheral component interconnection interface of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnection slot of the motherboard, and the fast peripheral component interconnection connection card is provided by the operating system running on the motherboard. The virtual prompt button ; Next, the fast peripheral component interconnection interface of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnection connection slot of the fast peripheral component interconnection connection card, and the fast peripheral component interconnection connection slot provides four x4 bandwidths Then, the fast peripheral component interconnection card triggers the prompt button and notifies the operating system; then, the operating system generates a control signal and sends it to the fast peripheral component interconnection card. The signal controls the voltage signal of P3V3_STBY, controls the voltage signal of P3V3, controls the voltage signal of P12V, respectively controls the voltage signals of the two groups of P12V_AUX input and output, controls the external logic through the two groups of input and output signals, controls the sequential logic of PERST, and controls the PRSNT Finally, after the execution of the hot-swap control logic module is completed, the operating system identifies the fast peripheral component interconnect card.

The system and method disclosed in the present invention are as above, and the difference between the system and the prior art is that the fast peripheral component interconnection interface of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnection slot of the motherboard, and the fast peripheral component interconnection interface is inserted into the fast peripheral component interconnection slot of the motherboard. The interconnection card is provided with virtual prompt buttons by the operating system running on the motherboard, and the fast peripheral component interconnection interface of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnection connection slot of the fast peripheral component interconnection card. Trigger the prompt button and notify the operating system, the operating system generates a control signal and sends it to the hot-plug control logic module to control each control unit in the hot-plug control logic module. After the unit is executed, the operating system recognizes the fast peripheral component interconnect card.

Through the above-mentioned technical means, the present invention can achieve the technical effect of providing fast hot-plugging effect of the peripheral component interconnect card.

The embodiments of the present invention will be described in detail below with the drawings and examples, so as to fully understand and implement the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects.

The following first describes the hot-plugging control system of the express peripheral component interconnection card disclosed in the present invention, and please refer to "Fig. 1". "Fig. 1" shows the hot-plugging of the express peripheral component interconnection card of the present invention. Pull out the system block diagram of the control system.

The fast peripheral component interconnection card hot-swap control system disclosed in the present invention includes: a motherboard 10, a fast peripheral component interconnection card 20, and a fast peripheral component interconnection card 30, and the fast peripheral component interconnection and connection card 30 is more Including: fast peripheral component interconnection interface 31, fast peripheral component interconnection connection slot 32 and hot-plug control logic module 33, hot-plug control logic module 33 further includes: P3V3_STBY control unit 331, P3V3 control unit 332 , P12V control unit 333 , P12V_AUX control unit 334 , AUX_IO control unit 335 , PERST control unit 336 and PRSNT control unit 337 .

The motherboard 10 has the express peripheral component interconnection slot 11, the express peripheral component interconnection interface 31 of the express peripheral component interconnection connection card 30 is inserted into the express peripheral component interconnection slot 11 of the motherboard 10, and the express peripheral component interconnection The link card 20 has a fast peripheral component interconnection interface 21, and the fast peripheral component interconnection interface 21 of the fast peripheral component interconnection card 20 is inserted into the fast peripheral component interconnection connection slot 32 of the fast peripheral component interconnection connection card 30. The peripheral component interconnection card 20 can be hot-swapped through the fast peripheral component interconnection connection card 30 .

When the express peripheral component interconnection interface 31 of the express peripheral component interconnection connection card 30 is inserted into the express peripheral component interconnection slot 11 of the motherboard 10 , the express peripheral component interconnection connection card 30 is operated by the motherboard 10 . The operating system provides a virtual Attention Button. When the fast peripheral component interconnection card 20 is inserted into the fast peripheral component interconnection connection slot 32 of the fast peripheral component interconnection connection card 30, the fast peripheral component interconnection connection card 30 The prompt button is triggered and the fast peripheral component interconnection card 30 notifies the operating system running on the mainboard 10, and the operating system generates a control signal and sends it to the hot-plug control logic module 33 of the fast peripheral component interconnection card 30, The hot-plug control logic module 33 of the fast peripheral component interconnection card 30 can perform the following control according to the control signal and realize the control of the hot-plug of the fast peripheral component interconnection card 30. The hot-plug control logic module 33 is implemented by an advanced reduced instruction set machine (ARM), which is only for illustration, and does not limit the application scope of the present invention.

The express peripheral component interconnection connection slot 32 of the express peripheral component interconnection card 30 provides four x4 bandwidth PCIe signal combinations, including four x4 bandwidth PCIe signals, one x8 bandwidth PCIe signal and two PCIe signals of x4 bandwidth, two PCIe signals of x4 bandwidth and one PCIe signal of x8 bandwidth, two PCIe signals of x8 bandwidth and one PCIe signal of x16 bandwidth, are only for illustration here. The scope of application of the present invention is not limited by this, so that it can be used for the fast peripheral component interconnection cards 30 of different fast peripheral components interchangeable versions.

The fast peripheral component interconnection connection slot 32 of the fast peripheral component interconnection connection card 30 is interrupted by interrupting the power supply of the fast peripheral component interconnection connection slot 32 of the fast peripheral component interconnection connection card 30, according to the control signal to the PCIe signal frequency. When the power supply of the fast peripheral component interconnection connection slot 32 of the fast peripheral component interconnection connection card 30 is restored, the fast peripheral component interconnection connection slot 32 of the fast peripheral component interconnection connection card 30 is adapted and adjusted according to the wide combination. 32 to change the combination of PCIe signal bandwidth.

The P3V3_STBY control unit 331 of the hot-plug control logic module 33 is used to control the voltage signal of P3V3_STBY according to the control signal, and the P3V3 control unit 332 of the hot-plug control logic module 33 is used to control the voltage signal of P3V3 according to the control signal. The P12V control unit 333 of the hot-plug control logic module 33 is used to control the voltage signal of P12V according to the control signal, and the P12V_AUX control unit 334 of the hot-plug control logic module 33 is used to respectively control a group of P12V_AUX inputs according to the control signal and the output voltage signal, the AUX_IO control unit 335 of the hot-plug control logic module 33 is used to control the external logic through two sets of input and output signals according to the control signal, and the PERST control unit 336 of the hot-plug control logic module 33 is The PRSNT control unit 337 of the hot-plug control logic module 33 is used to control the timing logic of the PRSNT according to the control signal.

Please refer to "Fig. 2". "Fig. 2" is a signal control diagram for the hot-plug control of the fast peripheral component interconnect card of the present invention.

The voltage signal of P3V3_STBY, the voltage signal of P3V3, the voltage signal of P12V, the voltage signal of P12V_AUX input and output, the sequential logic of PERST and the sequential logic of PRSNT respectively include the signals of on_delay, off_delay, delay, voltage_limit and current_limit, the control signal 41 Please refer to "Figure 2".

on_delay is the delay time that power on can use. off_delay is the delay time that power off can be adjusted. Delay is a special control for two sets of signals, and supports delay control when power on. voltage_limit is the voltage threshold limit for the power supply. current_limit is the current threshold limit for the power supply.

The on_delay signal of the voltage signal of P3V3_STBY is set to 0 to 3000 (ms), the off_delay signal is set to 0 to 3000 (ms), the delay signal is set to N/A, the voltage_limit signal is set to 0 to 3300 (mV) and the current_limit signal is set to 0 to 500 (mA).

The on_delay signal of the voltage signal of P3V3 is set to 0 to 3000 (ms), the off_delay signal is set to 0 to 3000 (ms), the delay signal is set to N/A, the voltage_limit signal is set to 0 to 3300 (mV) and the current_limit signal is set to 0 to 3500 (mA).

The on_delay signal of the voltage signal of P12V is set to 0 to 3000 (ms), the off_delay signal is set to 0 to 3000 (ms), the delay signal is set to N/A, the voltage_limit signal is set to 0 to 12000 (mV), and the current_limit signal is set to 0 to 6000 (mA).

The on_delay signal of the voltage signal of P12V_AUX_1 is set to 0 to 3000 (ms), the off_delay signal is set to 0 to 3000 (ms), the delay signal is set to N/A, the voltage_limit signal is set to 0 to 12000 (mV) and the current_limit signal is set to 0 to 20000 (mA).

The on_delay signal of the voltage signal of P12V_AUX_2 is set to 0 to 3000 (ms), the off_delay signal is set to 0 to 3000 (ms), the delay signal is set to N/A, the voltage_limit signal is set to 0 to 12000 (mV) and the current_limit signal is set to 0 to 20000 (mA).

The on_delay signal of the sequential logic of PERST is set to N/A, the off_delay signal is set to N/A, the delay signal is set to 0 to 3000 (ms), the voltage_limit signal is set to N/A, and the current_limit signal is set to N/A.

The on_delay signal of the sequential logic of PRSNT is set to N/A, the off_delay signal is set to N/A, the delay signal is set to 0 to 3000 (ms), the voltage_limit signal is set to N/A, and the current_limit signal is set to N/A.

Two sets of input and output signals provided by AUX_IO, the input signals can be read by the hot-plug control logic module 33 of the fast peripheral component interconnection card 30, and the output signals provide simple logical relationship control, and each output signal can be controlled according to Control in the following ways: Mode 1 directly outputs 0; Mode 2 directly outputs 1; Mode 3 output follows input 1; Mode 4 output follows input 2; Mode 5 output follows PWREN signal; The plug control enable signal, when the fast peripheral component interconnection card 30 performs the power on action to the fast peripheral component interconnection card 20, it will send the PWREN signal, whether the output is reversed indicates whether the logic of the output is reversed.

Please refer to "FIG. 3". "FIG. 3" is a flowchart illustrating a method for controlling the hot-plugging of a fast peripheral component interconnect card according to the present invention.

First, the fast peripheral component interconnection interface of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnection slot of the motherboard, and the fast peripheral component interconnection connection card is provided by the operating system running on the motherboard. The virtual prompt button (Step 101); Next, the fast peripheral component interconnection interface of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnection connection slot of the fast peripheral component interconnection connection card, and the fast peripheral component interconnection connection slot provides four x4 bandwidth PCIe signal combination (step 102 ); then, the express peripheral component interconnection card triggers the prompt button and notifies the operating system (step 103 ); then, the operating system generates a control signal and sends it to the express peripheral component interconnection connection The hot-plug control logic module of the card controls the voltage signal of P3V3_STBY, controls the voltage signal of P3V3, controls the voltage signal of P12V, respectively controls the input and output voltage signals of two groups of P12V_AUX according to the control signal, and passes through the two groups of input and output signals Control the external logic, control the sequential logic of PERST and control the sequential logic of PRSNT (step 104 ); finally, after the execution of the hot-plug control logic module is completed, the operating system identifies the fast peripheral component interconnect card (step 105 ).

From the above, it can be seen that the difference between the present invention and the prior art is that the fast peripheral component interconnection interface of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnection slot of the motherboard, and the fast peripheral component interconnection interface is inserted into the fast peripheral component interconnection slot of the motherboard. The connection card is provided with a virtual prompt button by the operating system running on the motherboard. The fast peripheral component interconnection interface of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnection connection slot of the fast peripheral component interconnection card to trigger the prompt. Press the button and notify the operating system. The operating system generates a control signal and sends it to the hot-plug control logic module to control each control unit in the hot-plug control logic module. When each control unit in the hot-plug control logic module executes After completion, the operating system recognizes the express peripheral component interconnect card.

This technical means can solve the problem of inconvenient replacement of the fast peripheral component interconnection card in the prior art, thereby achieving the technical effect of providing the effect of hot swapping of the fast peripheral component interconnection card.

Although the embodiments disclosed in the present invention are as above, the above-mentioned contents are not used to directly limit the scope of the patent protection of the present invention. Anyone with ordinary knowledge in the technical field to which the present invention pertains can make some changes in the form and details of the implementation without departing from the spirit and scope of the present invention. The scope of patent protection of the present invention shall still be defined by the scope of the appended patent application.

10: Motherboard 11: Fast peripheral component interconnect slot 20: Fast Peripheral Component Interconnect Card 21: Fast Peripheral Component Interconnect Interface 30: Fast Peripheral Component Interconnect Connection Card 31: Fast peripheral component interconnection interface 32: Fast peripheral component interconnect connection slot 33: Hot-plug control logic module 331: P3V3_STBY control unit 332: P3V3 Control Unit 333: P12V Control Unit 334:P12V_AUX control unit 335: AUX_IO control unit 336:PERST control unit 337:PRSNT Control Unit 41: Control signal Step 101: The fast peripheral component interconnection interface of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnection slot of the motherboard, and the fast peripheral component interconnection connection card is provided by the operating system running on the motherboard to provide virtual prompts button Step 102: The fast peripheral component interconnection interface of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnection connection slot of the fast peripheral component interconnection connection card, and the fast peripheral component interconnection connection slot provides four x4 bandwidths PCIe signal combination Step 103: The fast peripheral component interconnection connection card triggers the prompt button and notifies the operating system Step 104: The operating system generates a control signal and sends it to the hot-plug control logic module of the fast peripheral component interconnection card to control the voltage signal of P3V3_STBY, control the voltage signal of P3V3, control the voltage signal of P12V, and control the voltage signal of P12V according to the control signal. Two sets of P12V_AUX input and output voltage signals, control external logic through two sets of input and output signals, control the sequential logic of PERST and control the sequential logic of PRSNT Step 105: After the execution of the hot-swap control logic module is completed, the operating system identifies the fast peripheral component interconnect card

FIG. 1 is a system block diagram of a hot-swap control system for a fast peripheral component interconnect card according to the present invention. FIG. 2 is a signal control diagram of the hot-plug control of the fast peripheral component interconnect card according to the present invention. FIG. 3 is a flow chart of the method for controlling the hot-plugging of the fast peripheral component interconnect card according to the present invention.

10: Motherboard

11: Fast peripheral component interconnect slot

20: Fast Peripheral Component Interconnect Card

21: Fast Peripheral Component Interconnect Interface

30: Fast Peripheral Component Interconnect Connection Card

31: Fast peripheral component interconnection interface

32: Fast peripheral component interconnect connection slot

33: Hot-plug control logic module

331: P3V3_STBY control unit

332: P3V3 Control Unit

333: P12V Control Unit

334:P12V_AUX control unit

335: AUX_IO control unit

336:PERST Control Unit

337:PRSNT Control Unit

Claims (10)

A rapid peripheral component interconnect card hot-swap control system, comprising: a mainboard, the mainboard has a fast peripheral component interconnection slot; an express peripheral component interconnect card having an express peripheral component interconnect interface; and A fast peripheral component interconnection and connection card, the fast peripheral component interconnection and connection card is provided with a virtual attention button (Attention Button) by the operating system running on the motherboard, and the fast peripheral component interconnection and connection card further includes: a fast peripheral component interconnection interface for inserting into the fast peripheral component interconnection slot; an express peripheral component interconnection slot for providing the express peripheral component interconnection interface insertion, the express peripheral component interconnection connection slot providing four x4 bandwidth PCIe signal combinations; and A hot-plug control logic module for providing control of hot-plug of the fast peripheral component interconnect card according to a control signal, and the hot-plug control logic module further includes: a P3V3_STBY control unit for controlling the voltage signal of the P3V3_STBY according to the control signal; a P3V3 control unit for controlling the voltage signal of the P3V3 according to the control signal; a P12V control unit for controlling the voltage signal of the P12V according to the control signal; Two P12V_AUX control units are used to respectively control the two groups of P12V_AUX input and output voltage signals according to the control signal; an AUX_IO control unit for controlling external logic through two sets of input and output signals according to the control signal; a PERST control unit for controlling the sequential logic of PERST according to the control signal; and a PRSNT control unit for controlling the timing logic of the PRSNT according to the control signal; Wherein, when the fast peripheral component interconnection connection slot of the fast peripheral component interconnection connection card is inserted with the fast peripheral component interconnection card, a prompt button is triggered and notified to the operating system, and the operating system generates a The control signal is sent to the hot-plug control logic module to control each control unit in the hot-plug control logic module. When the execution of each control unit in the hot-plug control logic module is completed Then, the operating system identifies the express peripheral component interconnection card. The fast peripheral component interconnect card hot-plug control system according to claim 1, wherein the hot-plug control logic module is implemented by an advanced reduced instruction set machine (ARM). The fast peripheral component interconnect card hot-swap control system according to claim 1, wherein the voltage signal of P3V3_STBY, the voltage signal of P3V3, the voltage signal of P12V, the input and output voltage signals of P12V_AUX, the sequential logic of PERST and the voltage signal of PRSNT The timing logic includes the signals of on_delay, off_delay, delay, voltage_limit and current_limit respectively. The fast peripheral component interconnect card hot-swap control system according to claim 1, wherein the fast peripheral component interconnect connection slot provides four x4 bandwidth PCIe signal combinations including four x4 bandwidth PCIe signals , one x8 bandwidth PCIe signal and two x4 bandwidth PCIe signals, two x4 bandwidth PCIe signals and one x8 bandwidth PCIe signal, two x8 bandwidth PCIe signals and one x16 bandwidth PCIe signal signal. The fast peripheral component interconnect card hot-swap control system according to claim 1, wherein when the fast peripheral component interconnection slot of the fast peripheral component interconnection card is inserted into the fast peripheral component interconnect When the card is used, the power supply of the fast peripheral component interconnection connection slot is further interrupted, and the combination of the PCIe signal bandwidth is adapted and adjusted according to the control signal, and the power of the fast peripheral component interconnection connection slot is restored. When supplied, the Express Peripheral Component Interconnect slot is used to change the combination of PCIe signal bandwidths. A fast peripheral component interconnect card hot-swap control method, comprising: A fast peripheral component interconnection interface of a fast peripheral component interconnection connection card is inserted into a fast peripheral component interconnection slot of a motherboard, and the fast peripheral component interconnection connection card is operated by the motherboard. The operating system provides a virtual Attention Button; A fast peripheral component interconnection interface of a fast peripheral component interconnection card is inserted into a fast peripheral component interconnection connection slot of the fast peripheral component interconnection connection card, and the fast peripheral component interconnection connection slot provides four A combination of x4 bandwidth PCIe signals; The fast peripheral component interconnection connection card triggers a prompt button and notifies the operating system; The operating system generates the control signal and sends it to a hot-plug control logic module of the fast peripheral component interconnection card to control the voltage signal of P3V3_STBY, control the voltage signal of P3V3, control the voltage signal of P12V according to the control signal voltage signal, respectively control the two groups of P12V_AUX input and output voltage signals, control the external logic through the two groups of input and output signals, control the sequential logic of PERST and control the sequential logic of PRSNT; and After the execution of the hot-plug control logic module is completed, the operating system identifies the fast peripheral component interconnect card The fast peripheral component interconnect card hot-plug control method according to claim 6, wherein the hot-plug control logic module is implemented by an advanced reduced instruction set machine (ARM). The fast peripheral component interconnect card hot-plug control method according to claim 6, wherein the voltage signal of P3V3_STBY, the voltage signal of P3V3, the voltage signal of P12V, the voltage signal of P12V_AUX input and output, the sequential logic of PERST and the voltage signal of PRSNT The timing logic includes the signals of on_delay, off_delay, delay, voltage_limit and current_limit respectively. The fast peripheral component interconnect card hot-plug control method according to claim 6, wherein the fast peripheral component interconnect connection slot provides four x4 bandwidth PCIe signal combinations including four x4 bandwidth PCIe signals , one x8 bandwidth PCIe signal and two x4 bandwidth PCIe signals, two x4 bandwidth PCIe signals and one x8 bandwidth PCIe signal, two x8 bandwidth PCIe signals and one x16 bandwidth PCIe signal signal. The fast peripheral component interconnection card hot-plug control method according to claim 6, wherein when the fast peripheral component interconnection connection slot of the fast peripheral component interconnection connection card is inserted into the fast peripheral component interconnection When the card is used, the power supply of the fast peripheral component interconnection connection slot is further interrupted, and the combination of the PCIe signal bandwidth is adapted and adjusted according to the control signal, and the power of the fast peripheral component interconnection connection slot is restored. When supplied, the Express Peripheral Component Interconnect slot is used to change the combination of PCIe signal bandwidths.

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