Gigabyte GA-H81M-D3V, User Manual

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12) 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. Definition Pin No. Definition
1 STB- 14 GND
2 AFD- 15 PD6
3 PD0 16 GND
4 ERR- 17 PD7
5 PD1 18 GND
6 INIT- 19 ACK-
7 PD2 20 GND
8 SLIN- 21 BUSY
9 PD3 22 GND
10 GND 23 PE
11 PD4 24 No Pin
12 GND 25 SLCT
13 PD5 26 GND
11) COM (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. Definition Pin No. Definition
1 NDCD- 6 NDSR-
2 NSIN 7 NRTS-
3 NSOUT 8 NCTS-
4 NDTR- 9 NRI-
5 GND 10 No Pin
10
9
2
1
26
25
2
1
DEBUG
PORT
G.QBOFM
13) BAT (Battery)
The battery provides power to keep the values (such as BIOS configurations, date, and time information)
in the CMOS when the computer is turned off. Replace the battery when the battery voltage drops to a low
level, or the CMOS values may not be accurate or may be lost.
You may clear the CMOS values by removing the battery:
1. Turn off your computer and unplug the power cord.
2. Gently remove the battery from the battery holder and wait for one minute. (Or use a metal
object like a screwdriver to touch the positive and negative terminals of the battery holder,
making them short for 5 seconds.)
3. Replace the battery.
4. Plug in the power cord and restart your computer.
•
Always turn off your computer and unplug the power cord before replacing the battery.
• Replace the battery with an equivalent one. Danger of explosion if the battery is replaced with an incorrect model.
•
Contact the place of purchase or local dealer if you are not able to replace the battery by yourself or uncertain
about the battery model.
•
When installing the battery, note the orientation of the positive side (+) and the negative side (-) of the battery
(the positive side should face up).
•
Used batteries must be handled in accordance with local environmental regulations.