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1.8.2
CMOS Clear (CMOS1)
The AIMB-276 motherboard contains a jumper that can erase CMOS data and reset
the system BIOS information. Normally this jumper should be set with pins 1-2
closed. If you want to reset the CMOS data, set CMOS1 to 2-3 closed for just a few
seconds, and then move the jumper back to 1-2 closed. This procedure will reset the
CMOS to its default setting.
Table 1.3: CMOS1
Function
*Keep CMOS data
Clear CMOS data
* Default
1.8.3
Power Switch/HDD LED/SMBUS/Speaker Pin Header (JFP1)
Table 1.4: Power Switch/HDD LED/SMBUS/Speaker Pin Header (JFP1)
Pin
Signal
1
+5V
3
Power Button+
5
HDDLED-
7
SPK_P3
9
System Reset+
11
SMB_CLK
1.8.4
Power LED and Keyboard Lock Pin Header (JFP2)
Table 1.5: Power LED and Keyboard Lock Pin Header (JFP2)
Pin
1
2
3
4
5
Jumper Setting
1
1
3
12
10
1
Pin
2
4
6
8
10
12
1 2 3 4 5
Signal
LED Power
NC
GND
Keyboard LOCK#
GND
13
2
3
1
1-2 closed
2
3
1
2-3 closed
Signal
HDDLED+
NC
Power Button-
SMB_DATA
SPK_P4
System Reset-
AIMB-276 User Manual
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