ASRock 4Core1600-D800 Quick Installation Guide - Page 14

2.5 Jumpers Setup The illustration shows how jumpers are setup. When the jumper cap is placed on pins, the jumper is "Short". If no jumper cap is placed on pins, the jumper is "Open". The illustration shows a 3-pin jumper whose pin1 and pin2 are "Short" when jumper cap is Short Open placed on these 2 pins. Jumper Setting Description PS2_USB_PWR1 Short pin2, pin3 to enable (see p.2 No. 2) +5VSB (standby) for PS/2 or USB wake up events. Note: To select +5VSB, it requires 2 Amp and higher standby current provided by power supply. Clear CMOS (CLRCMOS1, 2-pin jumper) (see p.2 No. 10) 2-pin jumper Note: CLRCMOS1 allows you to clear the data in CMOS. The data in CMOS includes system setup information such as system password, date, time, and system setup parameters. To clear and reset the system parameters to default setup, please turn off the computer and unplug the power cord from the power supply. After waiting for 15 seconds, use a jumper cap to short 2 pins on CLRCMOS1 for 5 seconds. FD Jumper (FD, 3-pin jumper, see p.2 No. 26) Default Note1: If you use a FSB1600-CPU on this motherboard, you need to adjust the jumpers. Please short pin2, pin3 for FD jumper. Otherwise, the CPU may not work properly on this motherboard. Please refer to below jumper settings. English Note2: If you want to overclock the FSB800-CPU you adopt to FSB1066 on this motherboard, you need to adjust the jumpers. Please short pin2, pin3 for FD jumper. Otherwise, the CPU may not work properly on this motherboard. Please refer to below jumper settings. 14 ASRock 4Core1600-D800 Motherboard