Siemens Simatic 620 - Manual (Page 146)

Hardware Information
7-14
SIMATIC Box PC 620 Manual
A5E00131465-01
USB Port
The Universal Serial Bus ports have the following pinout:
4
3
2
1
Figure 7-6 USB port
Pin-No. Designation Description Input / Output
1 VCC +5V (fused) Output
2 - Data Data line Input / Output
3 + Data Data line Input / Output
4 GND Ground -
The connector is of type A.
The port is rated as a high current USB (500mA).