CMOS Battery
BT1 is a 2-pin header for an external battery. This connector is also used to clear the CMOS. To clear the CMOS, remove the battery, short pins 1–2 for more than 10 seconds and then install the battery.
For a detailed diagram of the A4SAP-H motherboard, see the layout under Motherboard Quick Reference.
|
CMOS Battery Pin Definitions |
|
|---|---|
|
Pin# |
Description |
|
1 |
P3V_BATTERY |
|
2 |
GND |