Gigabyte GA-H81M-HD3 - Page 17

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16) CLR_CMOS (Clear CMOS Jumper)
Use this jumper to clear the BIOS conguration and reset the CMOS values to factory defaults. To clear
the CMOS values, use a metal object like a screwdriver to touch the two pins for a few seconds.
• Always turn off your computer and unplug the power cord from the power outlet before clearing the CMOS values.
• After system restart, go to BIOS Setup to load factory defaults (select Load Optimized Defaults) or manually
congure the BIOS settings (refer to Chapter 2, "BIOS Setup," for BIOS congurations).
Open: Normal
Short: Clear CMOS Values
10
9
2
1
14) COMA (Serial Port Header)
The COM header can provide one serial port via an optional COM port cable. For purchasing the optional
COM port cable, please contact the local dealer.
Pin No. Denition Pin No. Denition
1 NDCD- 6 NDSR-
2 NSIN 7 NRTS-
3 NSOUT 8 NCTS-
4 NDTR- 9 NRI-
5 GND 10 No Pin
26
25
2
1
DEBUG
PORT
G.QBOFM
15) LPT (Parallel Port Header)
The LPT header can provide one parallel port via an optional LPT port cable. For purchasing the optional
LPT port cable, please contact the local dealer.
Pin No. Denition Pin No. Denition Pin No. Denition
1 STB- 10 GND 19 ACK-
2 AFD- 11 PD4 20 GND
3 PD0 12 GND 21 BUSY
4 ERR- 13 PD5 22 GND
5 PD1 14 GND 23 PE
6 INIT- 15 PD6 24 No Pin
7 PD2 16 GND 25 SLCT
8 SLIN- 17 PD7 26 GND
9 PD3 18 GND