9
Pin 1 & 3 of AT_COPEN (4-pin): AT Mode Function Select
AT_COPEN(Pin 1&3)
→
AT Mode Select
1-3 Close: AT Mode Selected.
1-3 Open: ATX Mode Selected(Default);
2
4
Pin 1
3
Pin 1
3
2
4
*ATX Mode Selected
: Press power button to power on after power input ready;
AT Mode Selected:
Directly power on as power input ready.
Pin 2 & 4 of AT_COPEN (4-pin): Case Open Message Display Function Select
AT_COPEN(Pin 2&4)
→
Case Open Function Select
2-4 Close: Case Open Function Selected (One Touch).
2-4 Open: Normal(Default);
4
3
3
4
1
1
Pin2
Pin2
Pin 2-4 Close
:
When Case open function pin short to GND, the Case open function
was detected. When Used, needs to enter BIOS and enable
‘
Case Open Detect
’