I am using a "Genius GM 56PCI-L Modem" which is V.90 compatible. I noticed that another user was trying to find a driver for his Genius Flex modem that would make it v.90 compatible. Also that he had lost connection speed. Hope this driver helps. My old modem was only connecting at 19200 and this one, with driver, usually will let me connect at either 42000 or 46000. This driver works for me so hopefully if someone else is having a problem it will work for them too.