Intel System Board G4H875-N - Manual (Page 32)

32
2
Hardware Installation
2 1 ON
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.
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
(JP3)
3
1
2
3
1
2
2-3 On: 5VSB 1-2 On: VCC
(default)
2-3 On: 5VSB 1-2 On: VCC
(default)
!
USB 3-4
(JP4)
1 3 2 1 3 2