Rosewill RNX-56USB-AG V.92/56K USB 2.0 (Plug & Play) Software Based Data/Fax/TAM Modem - Windows 7 Ready (RNMO-11001) This modem supports V.92/V.90 receiving data up to 56Kbps with V.44 data compression, V.17 Fax to 14.4Kbps, Telephone Answering Machine (TAM) and full speed (12 MHz) USB interface operation Software-based modem controller Windows Plug-n-Play (Windows 98SE, ME, 2000, XP, Vista,7 32 and 64 bit)