User guide

Mini-ITX EMB-945T Rev.B
Chapter 2 Quick Installation Guide 2 - 22
2.35 Audio Speaker Output Connector (CN26)
Pin Signal Pin Signal
1 SPK-R+ 2 SPK-R-
3 SPK-L+ 4 SPK-L-
2.36 COM2 RS-232/422/485 Serial Port Connector (PCON1)
COM2 RS-232/422/485 selection for EMB-945 Rev.B is set in BIOS
setting as following:
Entering BIOS Setting Menu: Choose "Integrated Peripherals
Æ
Super IO device
Æ COM2 select". (Default setting is at "RS-232")
Different devices implement the RS-232/422/485 standard in
different ways. If you have problems with a serial device, check the
pin assignments below for the connector.
Pin Signal Pin Signal
1
DCD
(422TXD-/485DATA-)
2 RXD (422RXD+)
3
TXD
(422TXD+/485DATA+)
4 DTR (422RXD-)
5 GND 6 DSR
7 RTS 8 CTS
9 RI 10 N.C.