IEI Integration IMBA-C2260-i2 - Manual (Page 61)

IMBA-C2260-i2 ATX Motherboard
Page 44
Figure 3-28: RS-422/485 Connector Location
Pin Description Pin Description
1 RXD422- 3 TXD422+/TXD485+
2 RXD422+ 4 TXD422-/TXD485-
Table 3-22: RS-422/485 Connector Pinouts
Use the optional RS-422/485 cable to connect to a serial device. The pinouts of the DB-9
connector are listed below.
RS-422 Pinouts RS-485 Pinouts
Table 3-23: DB-9 RS-422/485 Pinouts
3.2.28 SMBus Connector
CN Label: CN1
CN Type: 4-pin wafer
CN Location: See Figure 3-29
CN Pinouts: See Table 3-24
The SMBus (System Management Bus) connector provides low-speed system
management communications.