IEI Integration IMBA-Q770 - Manual (Page 50)

IMBA-Q770 ATX Motherboard
Page 35
Figure 3-20: RS-422/485 Connector Location
Pin Description Pin Description
1 RXD422- 3 TXD422+/TXD485+
2 RXD422+ 4 TXD422-/TXD485-
Table 3-16: RS-422/485 Connector Pinouts
3.2.20 Serial Port Connectors, RS-232
CN Label: COM2_3_5_6
CN Type: 40-pin box header
CN Location: See Figure 3-21
CN Pinouts: See Table 3-17
Each of these connectors provides RS-232 connections.
Figure 3-21: Serial Port Connector Location