14
Motherboard User’s Guide
LPT: Onboard parallel port header
This is a header that can ba used to connect to the printer, scanner or other devices.
1
STROBE
14 ALF
2
PD0
3
PD1
4
PD2
5
PD3
15 ERROR
16 INIT
17 SLCTIN
18 Ground
Pin Signal Name
Pin Signal Name
6
PD4
19 Ground
7 PD5
20 Ground
8 PD6
9 PD7
10 ACK
11 BUSK
12 PE
13 SLCT
21 Ground
22 Ground
23 Ground
24 Ground
25 Ground
26 Key
CASE: Chassis intrusion detect header
This detects if the chassis cover has been removed. This function needs a chassis
equipped with instrusion detection switch and needs to be enabled in BIOS.
Pin 1-2 Function
Short
Chassis cover is removed
Open
Chassis cover is closed
COM: Onboard serial port header
Connect a serial port extension bracket to this header to add a second serial port
to your system.
1
DCDB
Data Carrier Detect
2
SINB
Serial Input
3
SOUTB
UART B Serial Output
4
DTRB
UART B Data Terminal Ready
5
GND
Ground
6
DSRB
Data Set Ready
7
RTSB
RART B Request to Send
8
CTSB
Clear to Send
9
RI
Ring Indicator
10
Key
No pin
Pin
Signal Name Function
