If you are using a generic USB printing stack (like IPP over USB or Mopria), you may not need it. But for full features (toner levels, scanning over USB, duplex control), the Samsung driver – and thus usbprns2exe – is required.
Since Samsung sold its printer division to HP, the old Samsung support pages have been moved or archived. Here are the best ways to get the file:
: Connect your printer via USB and turn it on. Drag the printer driver file and drop it directly onto the usbprns2.exe Wait for Processing