Asus A8V-MX A8V-MX User''s Manual for English Edition - Page 30
Usbpw56, Usbpw78 - a8v x will not power up
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2 . USB device wake-up (3-pin USBPW12, USBPW34, USBPW56, USBPW78) 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 USBPW12 and USBPW34 jumpers are for the rear USB ports. The USBPW56 and USBPW78 jumper is for the internal USB connectors that you can connect to additional USB ports. ® A8V-MX A8V-MX USB device wake-up USBPW12 USBPW34 12 23 +5V (Default) +5VSB USBPW56 USBPW78 12 23 +5V (Default) +5VSB • 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. 1-20 Chapter 1: Product introduction