If you are running an earlier version of Windows 95 (for example, Windows 95b), your operating system software does not automatically support USB (Universal System Bus) devices. You will need to install the Windows 95 USB driver usbsupp.exe before using USB devices with SunPCi. Figure 4–1 shows the location of the USB port on the backplate of the SunPCi board.
Note – Windows NT 4.0 does not support USB devices. The usbsupp.exe driver works only with Windows 95.