Gigabyte GA-Q77M-D2H User Manual page 22

13) COMA/COMB (Serial Port Headers)
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.
14) 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.
9 1
10 2
Pin No. Definition
1 STB-
1 2
2 AFD-
3 PD0
4 ERR-
5 PD1
6 INIT-
7 PD2
8 SLIN-
9 PD3
25
26
10 GND
11 PD4
12 GND
13 PD5
- 22 -
Pin No. Definition
1 NDCD-
2 NSIN
3 NSOUT
4 NDTR-
5 GND
6 NDSR-
7 NRTS-
8 NCTS-
9 NRI-
10 No Pin
Pin No. Definition
14 GND
15 PD6
16 GND
17 PD7
18 GND
19 ACK-
20 GND
21 BUSY
22 GND
23 PE
24 No Pin
25 SLCT
26 GND