IEI Integration NANO-9453 v1.10 - Manual (Page 88)

NANO-9453 EPIC Motherboard
Page 68
COM 1 is located on pin 1 to pin 10
COM 2 is located on pin 11 to pin 20
COM 3 is located on pin 21 to pin 30
COM 4 is located on pin 31 to pin 40
Figure 4-19: 4-port Serial Port Connector Pinout Locations
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 DATA CARRIER DETECT (DCD1) 2 DATA SET READY (DSR1)
3 RECEIVE DATA (RXD1) 4 REQUEST TO SEND (RTS1)
5 TRANSMIT DATA (TXD1) 6 CLEAR TO SEND (CTS1)
7 DATA TERMINAL READY (DTR1) 8 RING INDICATOR (RI1)
9 GND 10 GND
11 DATA CARRIER DETECT (DCD2) 12 DATA SET READY (DSR2)
13 RECEIVE DATA (RXD2) 14 REQUEST TO SEND (RTS2)
15 TRANSMIT DATA (TXD2) 16 CLEAR TO SEND (CTS2)
17 DATA TERMINAL READY (DTR2) 18 RING INDICATOR (RI2)
19 GND 20 GND
21 DATA CARRIER DETECT (DCD3) 22 DATA SET READY (DSR3)
23 RECEIVE DATA (RXD3) 24 REQUEST TO SEND (RTS3)
25 TRANSMIT DATA (TXD3) 26 CLEAR TO SEND (CTS3)
27 DATA TERMINAL READY (DTR3) 28 RING INDICATOR (RI3)
29 GND 30 GND
31 DATA CARRIER DETECT (DCD4) 32 DATA SET READY (DSR4)