Pinout Diagram - StarTech.com ICUSB2324852 Quick Start Manual

2 port usb to rs232/422/485 serial adapter with com retention
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DIP Switch Setting

Pinout Diagram

S1
S2
TxD+ (Data+)
TxD- (Data-)
RxD+
RxD-
GND
Instruction Manual
Description
NOTE: switch 3 and 4 must be set to OFF for RS232
mode to work correctly.
RS232
4
RS485 - 2-wire
(default)
RS485 - 4-wire
RS422
RS232
RS422(4-wire)/485 (4-wire/2-wire)

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