User manual

IMB-Q670 Micro-ATX Motherboard
Page 32
Used for RS-422/485 communications.
Figure 3-16: Serial Port Connector Location
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 RXD485# 3 RXD485+
2 RXD485+ 4 RXD485#
Table 3-16: Serial Port Connector Pinouts
3.2.16 Serial Port Connectors, RS-232
CN Label: COM3-6, COM7-10
CN Type:
40-pin box header (2x20)
CN Location:
See Figure 3-17
CN Pinouts:
See Table 3-17
Each of these connectors provides RS-232 connections.