User guide

Viglen Genie Executive pBTX 915 User Guide V1.0

Figure 41: Clear RTC RAM

Note: Except when clearing the RTC RAM, never remove the cap on CLRTC jumper

default position. Removing the cap will cause system boot failure.

USB Device Wake-Up (3-pin USBPW12)

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 (no power to

CPU, DRAM in slow refresh, power supply in reduced power mode).

Figure 42: USB Device Wake-Up

Note: 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.

Keyboard Power (3-pin KBPWR)

This jumper allows you to enable or disable the keyboard wake-up feature. Default

setting is 2-3. Set this jumper to pins 1-2 (+5V) if you do not want to wake up the

computer when you press a key on the keyboard. This feature requires an ATX

power supply that can supply at least 1A on the +5VSB lead, and a corresponding

setting in the BIOS.