Siemens SIMATIC Box PC 620 Manual page 49

Connecting USB Periphery
You can connect peripheral devices with USB interfaces to the USB port.
S Plug the USB cable into the port.
The device is automatically detected by a Plug and Play operating system, e.g.
Windows 98, and is then available.
A USB keyboard can be used to manipulate the BIOS setup.
Figure 4-6 USB connection
Note
Operating systems which do not support Plug and Play (e.g. Windows NT 4.0), do
not generally allow the operation of USB devices.
SIMATIC Box PC 620 Manual
C79000-G7076-C639-04
Setting Up and Operating the SIMATIC Box PC 620
USB port
4-9