Asus M5A78L-M PLUS - Manual (Page 33)

4. LPT connector (26-1 pin LPT)
The LPT (Line Printing Terminal) connector supports devices such as a printer. LPT
standardizes as IEEE 1284, which is the parallel port interface on IBM PC-compatible
computers.
3. Serial port connector (10-1 pin COM1)
The connector is for a serial (COM) port. Connect the serial port module cable to the
connector, then install the module to a slot opening at the back of the system chassis.
The serial port bracket is purchased separately.
M5A78L-M LE
M5A78L-M LE Serial port (COM1) connector
PIN 1
COM1
M5A78L-M LE
M5A78L-M LE LPT connector
PIN
1
LPT
STB# PD
0
PD
1
PD
2
PD
3
PD
4
PD
5
PD
6
PD
7
ACK# BUSY
PE
SLCT
AF
D
ERR# INIT
#
SLIN
#
GND GND GND GND GND GND GND GND
ASUS M5A78L-M Series 1-23