Under Win 8.1. Plug and losfaxen. The supplied CD provides eh no drivers for Win Vista. Is not necessary. The insertion into the netbook (USB1.1) and in the Tefelfondose (TAE) in addition to the phone jack (which can stay inside), select Document, select the Print Fax Choose a contact and you're out the fax. So quickly we went previously not incorporating a modem. For under 22, a good buy