User`s manual

MANO110 Series Mini ITX Board User’s Manual
Hardwarre Description
23
 2.4.13 COM2, COM3 and COM4 Connectors
(CN30,CN24,CN25,)
Please refer to the RS-232 pin assignment as listed below:
Pin
Signal
Pin
Signal
COM2/3/4
1
Data Carrier Detect (DCD)
2
Data Set Ready
(DSR)
3
Receive Data (RXD)
4
Request to Send
(RTS)
5
Transmit Data (TXD)
6
Clear to Send
(CTS)
7
Data Terminal Ready (DTR)
8
Ring Indicator (RI)
9
Ground (GND)
10
Key
 2.4.14 SMBUS Connector (CN26)
Connector SMBUS1 is for SMBUS interface support.
Pin
Signal
SMBUS(CN26)
1
CLOCK
2
DATA
3
GND