Feature●Compliant Standards - Hayes AT & Extended AT Command Set●Data Standards Supported - V.92, V.90, V.34, V.32bis, V.22, V.23, V.21, Bell 103/212A●Data Transfer Rate - 56 Kbps V.90, V.92. Fax Transfer Rate - 14.4 Kbps●Fax Transfer Rate - 14.4 Kbps●Windows 7, Vista, XP or 2000 are required if you want to use Modem-on-HoldDescription
The Model 3095 V.92 USB Mini External Modem from Zoom Telephonics is a ... a built-in modem, it is capable of dial-up data transfers of up to 56k in speed.