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Key Lock - It is a 2-Pin header connects to the chassis-mounted key lock switch. The
key lock switch is used to lock the keyboard for security purpose.
Power LED - It is a 3-Pin header connects to the chassis-mounted power LED. Power
LED is on when the motherboard is supplied power.
5.9. Battery "BAT1"
It is a coin-cell style Lithium CR2032 battery is used to provide power to the RTC and
CMOS memory.
The battery has a three years life if the system is not powered up. When the system
powers up, the power for the RTC and CMOS RAM is supplied from the 3.3V power
supply to extend the life of battery.
Replace if BIOS does not keep its settings.
5. Function Illustrations
2 2 2 2 2
1 1 1 1 1
Front Panel I/O "FSP1"
Power
HDD
switch
LED
2 2 2 2 2
+ + + + +
1 1 1 1 1
Reset Switch
M81-MX Series User's Manual
26 26
26 26
26
25 25
25 25
25
Power
K/B
LED
Lock
26 26
26
26 26
+ + + + +
+ + + + +
25
25 25
25 25
Reserve for
.52
.52
.52
.52
.52
Internal Speaker
13
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