Asus P4PE-X TE P4PE-X/TE User Manual - Page 26

3. USB device wake-up (3-pin USBPW12, USBPW34, USBPW56) 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 sleep mode (no power to CPU, DRAM in slow refresh, power supply in reduced power mode). Both jumpers are set to pins 1-2 (+5V) by default because not all computers have the appropriate power supply to support this feature. The USBPW12 and USBPW34 jumpers are for the rear USB ports. The USBPW56 jumper is for the internal USB header that you can connect to the front USB ports. 1. This feature requires a power supply that can provide at least 1A on the +5VSB lead when these jumpers are set to +5VSB. Otherwise, the system would not power up. 2. The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal condition or in sleep mode. USBPW12 12 23 ® P4PE-X/TE +5V (Default) +5VSB USBPW34 USBPW56 12 23 +5V P4PE-X/TE USB Device Wake Up (Default) +5VSB 1.12 Connectors This section describes and illustrates the internal connectors on the motherboard. 1. Hard disk activity LED (2-pin IDE_LED1) This connector supplies power to the hard disk activity LED. The read or write activities of any device connected to the primary or secondary IDE connector cause this LED to light up. P4PE-X/TE TIP: If the case-mounted LED does not ® light up, try reversing the 2-pin plug. IDE_LED1 P4PE-X/TE HD Activity LED 1-16 Chapter 1: Product introduction