This driver is for a US Robotics Winmodem 33.6 which seems to be modified for HP. The normal US Robotics Winmodem 33.6 driver does not seems to be working with this modem, even the internal card makes references to US Robotics Winmodem. During installation Windows detects this HP Fast Modem 4810B for which I did not find any references or drivers at HP Internet site. The installation with this driver is straight forward. The modem should be detected during startup of Windows 95/98 and the option of Have Disk should be used to install the driver. The sgx1x2eu.exe is a self extracting program.