PT-5ITB
SYSTEM BOARD
HARDWARE SETUP
4-3
(E) CN4
AT Power connector
Pin # Assignment
1
●
1
Power Good
2
●
2
+5V DC
3
●
3
+12V DC
4
●
4
-12V DC
5
●
5
Ground
6
●
6
Ground
7
●
7
Ground
8
●
8
Ground
9
●
9
-5V DC
10
●
10
+5V DC
11
●
11
+5V DC
12
●
12
+5V DC
(F) CN5
COM B (Serial Port 2) connector
COM 1/2/3/4, selected by BIOS setup, using IRQ 3 or 4
1 2
Pin # Assignment
Pin # Assignment
● ●
1
DCD (Data Carrier Detect)
2
RD (Received Data)
● ●
3
TD (Transmit Data)
4
DTR (Data Terminal Ready)
● ●
5
Ground
6
DSR (Data Set Ready)
● ●
7
RTS (Request To Send)
8
CTS (Clear To Send)
● ●
9
RI (Ring Indicator)
10
No Connection
9 10
P8
P9
