ASRock H55M/USB3 R2.0 User Manual - Page 19

2.7 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 placed on these 2 pins. Jumper Setting Description PS2_USB_PWR1 (see p.11, No. 2) 1_2 +5V 2_3 +5VSB Short pin2, pin3 to enable +5VSB (standby) for PS/2 or USB45 wake up events. Note: To select +5VSB, it requires 2 Amp and higher standby current provided by power supply. USB_PWR2 1_2 Short pin2, pin3 to enable (see p.11, No. 32) +5V_DUAL for USB1/23 +5V +5V_DUAL wake up events. Note: To select +5V_DUAL, it requires 2 Amp and higher standby current provided by power supply. When you select +5V_DUAL, USB devices can wake up the system under S3 (Suspend to RAM) state. USB_PWR3 1_2 (see p.11, No. 15) 2_3 Short pin2, pin3 to enable +5VSB (standby) for +5V +5VSB USB6_7/8_9/10_11wake up events. Note: To select +5VSB, it requires 2 Amp and higher standby current provided by power supply. Clear CMOS Jumper (CLRCMOS1) (see p.11, No. 20) 1_2 2_3 Default Clear CMOS 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 pin2 and pin3 on CLRCMOS1 for 5 seconds. However, please do not clear the CMOS right after you update the BIOS. If you need to clear the CMOS when you just finish updating the BIOS, you must boot up the system first, and then shut it down before you do the clearCMOS action. 19