Conexant-Ambit Softk56 for Sony Vaio PCG-FX170 Notebook. All Sony computers suck, as well as the support page in their website... I say this after working with 3 different laptops. Anyway, I Downloaded their installable driver and it aborts after giving a weird error message (Damn!)... then I found these files on a folder in the windows temp folder right before the installer got it deleted... it gave me a weird error ("could not install modem" or something like that), but I rebooted the computer and the modem worked fine! hope this works for you.