ECS A55F-M3 - Page 21

17
Installing the Motherboard
COM: Onboard serial port header
Connect a serial port extension bracket to this header to add a serial port to your
system.
1 DCDB Data Carrier Detect
2 SINB Serial Input
3 SOUTB UART B Serial Output
4 DTRB UART B Da ta 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
LPT: Onboard parallel port Header
This is a header that can be used to connect to the printer, scanner or other devices.
1 STROBE 14 AFD
2 PD0 15 ERROR
3 PD1 16 INIT
4 PD2 17 SLCT
5 PD3 18 Ground
6 PD4 19 Ground
7 PD5 20 Ground
8 PD6 21 Ground
9 PD7 22 Ground
10 ACK 23 Ground
Pin Signal Name Pin Signal Name
11 BUSK 24 Ground
12 PE 25 Ground
13 SLCT 26 Key
SPDIFO: SPDIF out header
This is an optional header that provides an S/PDIF (Sony/Philips Digital Interface)
output to digital multimedia device through optical fiber or coaxial connector.
2 +5VA 5V analog Power
3 Key No pin
4 GND Ground
1 SPDIF SPDIF digital output
Pin Signal Name Function