Acer Veriton X4620G Service Manual page 117

COM2 : Onboard serial port header
Connect a serial port extension bracket to this header to add a second serial port toyour system.
Pin
1
2
3
4
5
6
7
8
9
10
OBR1: One button recovery jumper
PRINTER: Onboard parallel port header
This is a header that can be used to connect to the printer, scanner or other devices.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
109
Signal Name
DCD
SIN
SOUT
DTR
GND
DSR
RTS
CTS
RI
Key
Pin Signal Name
1 OBR
2 GND
Signal Name
STROBE
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
ACK
BUSK
PE
SLCT
Function
Data Carrier Detect
Serial Input
Serial Output
Data Terminal Ready
Ground
Data Set Ready
Request to Send
Clear to Send
Ring Indicator
No pin
Pin Signal Name
14 ALF
15 ERROR
16 INIT
17 SLCTIN
18 Ground
19 Ground
20 Ground
21 Ground
22 Ground
23 Ground
24 Ground
25 Ground
26 Key
Chapter 5