Intel System Board G4H875-B User Manual page 32

2
Hardware Installation
2.4.3 USB Keyboard Wake Up
These jumpers are used to select the power of the USB ports.
Selecting 5VSB will allow you to use the Wake-On-USB Key-
board function.
On the G4H875-N and G4H875-C system boards, JP3 is for
setting USB 1-4 that are at the rear I/O panel. USB 3-4 are not
present at the rear I/O panel of the G4H875-B system board,
therefore JP3 on this board is for setting USB 1-2 only.
On the G4H875-B system board, JP4 is for setting the external
ports connected to J12 (USB 3-4 connector).
BIOS Setting:
"USB KB WakeUp From S3(S4)" in the Power Management Setup
submenu of the BIOS must be set to Enabled. Refer to chapter 3
for more information.
32
Important:
• If you are using the Wake-On-USB Keyboard function for 2
USB ports, the 5VSB power source of your power supply
must support 2A.
• If you are using the Wake-On-USB Keyboard function for 3
or more USB ports, the 5VSB power source of your power
supply must support 2A.
USB 1-4
3
(JP3)
!
2
1
1-2 On: VCC
(default)
USB 3-4
3 2 1
(JP4)
!
1-2 On: VCC
(default)
3
2
1
2-3 On: 5VSB
3 2 1
2-3 On: 5VSB