The USC Server software is the connection between the SAM library and the Windows USB driver.

By default it is running in non visible mode.
For diagnostic purpose it might be helpful to start it in visible mode:
- quit SAMLight or any other SAM based software
- start Windows Taskmanager and exit process sc_usc_server.exe
- from command line:
c:\\scaps\\sam2d\\system\\sc_usc_server.exe /v
- the USC Server window pops up
When a card is connected and recognized properly, some messages are listed, the last one should be DeviceOK.

The Test... button pops up a Dialog for direct control of outputs.
Please make absolutely sure that Laser is in safe mode before opening this window.
Pressing Out 0 should switch on/off the red LED on the USC board.