ECS B75H2-AM2, User Manual, Page: 23 / 52

19
Installing the Motherboard
1
DCD Data Carrier Detect
2
SIN Serial Input
3
SOUT Serial Output
4
DTR Data Terminal Ready
5
GND Ground
6
DSR Data Set Ready
7
RTS Request to Send
8
CTS Clear to Send
9
RI Ring Indicator
10
Key No pin
Pin Signal Name Function
COM2 : Onboard serial port header
Connect a serial port extension bracket to this header to add a second serial port to
your system.
PRINTER: Onboard parallel port header
This is a header that can be used to connect to the printer, scanner or other devices.
Pin Signal Name Pin Signal Name
1 STROBE 14 ALF
2 PD0 15 ERROR
3 PD1 16
INIT
4 PD2 17
SLCTIN
5 PD3 18
Ground
6 PD4 19
Ground
7 PD5 20
Ground
8 PD6 21
Ground
9 PD7 22
Ground
10 ACK 23
Ground
11 BUSY 24
Ground
12 PE 25
Ground
13 SLCT 26
Key