Serial Port Connector, Rs-422/485; Figure 3-28: Rs-422/485 Connector Location; Table 3-22: Rs-232 Serial Port Connector Pinouts; Table 3-23: Rs-422/485 Connector Pinouts - IEI Technology IMBA-H810 User Manual

IMBA-H810 ATX Motherboard
Pin Description
5 TXD
7 DTR
9 GND

Table 3-22: RS-232 Serial Port Connector Pinouts

3.2.27 Serial Port Connector, RS-422/485

CN Label: COM4
CN Type: 4-pin wafer, p=2 mm
CN Location: See Figure 3-28
CN Pinouts: See Table 3-23
This connector provides RS-422 or RS-485 communications.

Figure 3-28: RS-422/485 Connector Location

Pin Description
1 RXD422-
2 RXD422+

Table 3-23: 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.
Pin Description
6 CTS
8 RI
10 N/C
Pin Description
3 TXD422+/TXD485+
4 TXD422-/TXD485-
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