User Manual

2-202-20

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Chapter 2: Hardware informationChapter 2: Hardware information

Chapter 2: Hardware information

3.3.

USB device wake-up (3-pin USBPW12, USBPW34)USB device wake-up (3-pin USBPW12, USBPW34)

USB device wake-up (3-pin USBPW12, USBPW34)

Set these jumpers to +5V to wake up the computer from S1 sleep

mode (CPU stopped, DRAM refreshed, system running in low power

mode) using the connected USB devices. Set to +5VSB to wake up

from S4 sleep mode (no power to CPU and DRAM, power supply in

reduced power mode).

•

The USB device wake-up feature requires a power supply that can

provide 500mA on the +5VSB lead for each USB port; otherwise, the

system would not power up.

•

The total current consumed must NOT exceed the power supply

capability (+5VSB) whether under normal condition or in sleep mode.

2.2.

CPU fan pin selection (3-pin FM_CPU1, FM_CPU2)CPU fan pin selection (3-pin FM_CPU1, FM_CPU2)

CPU fan pin selection (3-pin FM_CPU1, FM_CPU2)

These jumpers allow you to connect either a 3-pin or a 4-pin fan cable

plug to the CPU fan connectors (CPU_FAN1, CPU_FAN2). Set these

jumpers to pins 1-2 if you are using a 3-pin fan cable plug, or to pins

2-3 if you are using a 4-pin plug.

P5CR-LS

3221

P5CR-L(S) FM CPU Setting

FM_CPU2

FM_CPU1

12 23

3-pin fan 4-pin fan

(Default)

3-pin fan 4-pin fan

(Default)

P5CR-LS

P5CR-L(S) USB device wake-up

USBPW12

(Default)

+5V +5VS

2312

USBPW34

(Default)

+5V +5VS