Asus M2A-MX - Manual (Page 37)

ASUS M2A-MX 1-25
2. USB device wake-up (3-pin PS2_USBPW)
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 S3 and S4 sleep
modes.
• 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 will not power up.
• The total current consumed must NOT exceed the power supply
capability (+5VSB) whether under normal condition or in sleep mode.
M2A-MX
R
M2A-MX USB Device Wake Up
3
2 2
1
PS2_USBPW
+5V
(Default)
+5VSB