Serial Port Connector (Com3); Figure 3-20: Serial Port Connector Location; Table 3-21: Serial Port Connector Pinouts - IEI Technology PICOe-HM650 User Manual

PICOe-HM650 Half-size PCIe CPU Card

3.2.19 Serial Port Connector (COM3)

CN Label: COM3
4-pin header (1x4)
CN Type:
CN Location: See Figure 3-20
CN Pinouts: See Table 3-21
NOTE:
These pins are shared with those on the main serial port. Use either
the pins on the main connector, or on this connector, but not both.
This connector provides RS-422 or RS-485 communications.

Figure 3-20: Serial Port Connector Location

Pin Description
1 RXD485#
2 RXD485+
3 RXD485-
4 RXD485#

Table 3-21: Serial Port Connector Pinouts

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