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JP7: Clear CMOS Contents
Use JP7, a 3-pin header, to clear the CMOS contents. Note that the
ATX-power connector should be disconnected from the motherboard
before clearing CMOS.
JP7
JP1, JP2, JP3: RS232/422/485 (COM2) Selection
COM1 is fixed for RS-232 use only.
COM2 is selectable for RS232, RS-422 and RS-485.
1008097: COM3 and COM4 are fixed for RS-232 use only. The following
table describes the jumper settings for COM2 selection.
Function
(pin closed)
10
Setting
Pin 1-2
Short/Closed
Pin 2-3
Short/Closed
COM2
RS-232
JP3:
1-2
Jumper
Setting
JP1:
3-5 & 4-6
JP2:
3-5 & 4-6
Function
Normal
Clear CMOS
RS-422
RS-485
JP3:
3-4
JP1:
1-3 & 2-4
1-3 & 2-4
JP2:
1-3 & 2-4
1-3 & 2-4
JP3:
5-6
JP1:
JP2:
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