![Gigabyte B660M D3H DDR4 User Manual Download Page 26](http://html1.mh-extra.com/html/gigabyte/b660m-d3h-ddr4/b660m-d3h-ddr4_user-manual_2223513026.webp)
- 26 -
14) 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
1
NDCD-
2
NSIN
3
NSOUT
4
NDTR-
5
GND
6
NDSR-
7
NRTS-
8
NCTS-
9
NRI-
10
No Pin
2
1
10
9
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.
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
DEBUG
PORT
G.QBOFM
1
2
26
25