NEXCOM OPPC 1520T - Manual (Page 38)

Copyright © 2011 NEXCOM International Co., Ltd. All Rights Reserved. 23
Chapter 2: Jumpers and Connectors
OPPC 1520T/1720T User Manual
Pin Definition Pin Definition
1 TXD-: Transmit Data Negative
RXD-: Receive Data Negative 2 TXD+: Transmit Data Positive
RXD+: Receive Data Positive
3 Reserved 4 Reserved
5 Reserved 6 Reserved
7 Reserved 8 Reserved
9 Reserved (could be a 5V or 12V
power pin)
RS485 USB Ports
Connector type: Dual USB port
Connector location: USB1 and USB2
Pin Definition Pin Definition
1 VCC5 5 VCC5
2 USB0- 6 USB1-
3 USB0+ 7 USB1+
4 GND 8 GND
USB1
Pin Definition Pin Definition
1 VCC5 5 VCC5
2 USB2- 6 USB3-
3 USB2+ 7 USB3+
4 GND 8 GND
USB2