DFI ES121-LR - Manual (Page 32)

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4
Jumper Settings
JP3 (for USB 2-5), JP4 (for USB 0-1) and JP7 (for USB 6-7) are used to select
the power of the USB ports. Selecting +5V_standby will allow you to use a USB
device to wake up the system.
BIOS Setting
“USB Device Wakeup From S3” in the Advanced menu (“ACPI Configuration” sub-
menu) of the BIOS must be set to Enabled. Refer to chapter 7 for more informa-
tion.
Important:
If you are using the Wake-On-USB Keyboard/Mouse function for 2 USB
ports, the +5V_standby power source of your power supply must sup-
port ≥1.5A. For 3 or more USB ports, the +5V_standby power source of
your power supply must support ≥2A.
USB Power Select
USB 0-1 power
select (JP4)
2-3 On:
+5V_standby
1-2 On: +5V
(default)
USB 6-7 power
select (JP7)
USB 2-5 power
select (JP3)
3 1 2 3 1 2
3 1 2 3 1 2
2-3 On:
+5V_standby
1-2 On: +5V
(default)