[FCCID=4X2USA-2522/-M5-e] Straight from the USR site, this is for the god-awful-hard-to-find Gateway USR model 0613 56K ISA internal. Mine has a sticker on the line connectors with serial/model number ending in 00568301. Run the .exe to extract to floppy and point your modem installation routine to it. Worked for me... finally!