ECS G43T-M Manual page 23

COM: Onboard Serial Port header
Connect a serial port extension bracket to this header to add a second serial port to
your system.
Pin Signal Name
1
DCDB
2
SINB
3
SOUTB
4
DTRB
5
GND
6
DSRB
7
RTSB
8
CTSB
9
RI
10
Key
SPI_ROM: SPI ROM header
This 8 Mb ROM contains the programmable BIOS program.
Pin Signal Name
1
CHIP SELECT
2
VCC
3
DATA OUTPUT
4
HOLD
5
WRITE PROTECT
6
CLOCK
7
CND
8
DATA INPUT
Installing the Motherboard
Function
Data Carrier Detect
Serial Input
UART B Serial Output
UART B Data Terminal Ready
Ground
Data Set Ready
RART B Request to Send
Clear to Send
Ring Indicator
No pin
Function
Select chip
VCC
data output
hold
BIOS write protect
clock
CND
data input
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