User manual

Page 159
PPC-5170GS Flat Panel PC
B.7 USB Port Connector
The POS-8520 has eight built-in USB ports for the future I/O bus expansion.
CN26, CN27, CN28: 8-PIN Header USB Connectors
PIN Description
1 8 VCC
3 6 USBD0-
5 4 USBD0+
7 2 GND
CN25: 2 External USB Connectors
PIN Description
1 5 VCC
2 6 USBD0-
3 7 USBD0+
4 8 GND