Transmission Line: RJ11. 56K data/fax modem with USB interface. Complies with V.17, V.29, and V.27ter Group 3 fax protocol. Complies with V.92, V.90 and V.42, V.42bis/MNP5 Protocol. * The chipset is the type supporting Win7 & Windows Vista. Supports the automatic dial-up, tone and pulse dialing, automatic answering, automatic sending and receiving fax. Supports caller ID, distinctive ring detect and automatic format/speed sensing. * Supports data, fax/voice call discrimination, single configuration profile stored in host and call forward/fall-back. Supports Microsoft Windows 98SE, Win 2000, Win Me. * Supports Win XP, WinXP-64bit, Win7-32bit, Win7-64bit and Vista-32bit, Vista-64bit. Up to 56Kbps data download, 48Kbps data upload and 14.4Kbps fax communication. Color: Black. * Package Include: 1 x Black 56K V.90 V.92 External USB Voice Fax Data Modem, 1 x Drive Disk, 1 x RJ11 Cable.