Headers and connectors
23
Overheat (OH)/fan fail LED
Connect an LED cable to the OH/fan fail connections on pins 7 and 8 of JF1 to provide
advanced warnings for chassis overheat/fan failure.
Power fail LED
The power fail LED connection is located on pins 5 and 6 of JF1.
Reset button
The reset button connection is located on pins 3 and 4 of JF1. Attach it to a hardware reset
switch on the computer case.
Power button
The power button connection is located on pins 1 and 2 of JF1. Momentarily contacting both
pins will power on or off the system. This button can also be configured in the BIOS to function
as a suspend button. To turn off the power in suspend mode, press the button for at least four
seconds.
Table 15. OH/fan fail pin definitions (JF1)
Pin # Definition
7VCC
8OH/Fan Fail LED
Table 16. OH/fan fail indicator status
State Definition
Off Normal
On Overheat
Flashing Fan fail
Table 17. PWR fail LED pin definitions (JF1)
Pin # Definition
5VCC
6 Ground
Table 18. Reset button pin definitions (JF1)
Pin # Definition
3 Reset
4 Ground
Table 19. Power button pin definitions (JF1)
Pin # Definition
1Signal
2 Ground
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