Transmission Line: RJ11Conexant chipset56K data/fax modem with USB interfaceCompliant with V.90,V.92 and V.42/V.42bis/MNP5 protocolsCompliant with V.17, V.29, and V.27ter Group 3 fax protocol1.Up to 56K data download, 48K data upload, and 14.4K fax communication2.Provide Quick Connect and Modem-on-Hold features3.Support Auto-Dial, Tone and pulse dialing, Auto answer, Auto retrain4.Support Caller ID and distinctive ring detect, Auto Compatible Withmat/speed sensing, Data/Fax call discrimination, Single configuration profile stored in host, call Compatible Withward/fallback5.Support Windows 98SE/2000/ME/XP/Vista(32/64 Bit)/Win 7(32/64 Bit)6.High perCompatible Withmance, and low cost 7. Small size, Compatible With Notebook and Desk Top PC use8. 2 RJ11 Ports, you can set your telephone, fax system9.Color: Black10. Power Consumptionless than 70+/-0.5mA Operating Modeless than 3+/-0.5mA Stand-byHow to use:1.Install the drive in your computer operating system.There are different types of drive Compatible With compatible systems in the CD disk.2.Make sure the fax function is available in your operating system.The fax widget is included in Win7 and Win Vista. When you are using Win XP or a lower version, its necessary to install the fax widget with a Windows system disk.Applications:Make Calls from your PCSend/Receive Fax with your PCConnect to the internet at 56k dial-up modem speedsPackage Included:1 x USB2.0 56K External Dial Up Data Fax Modem V90 V92 Compatible With Win7 64-bit 2Ports1 x CD Driver1 x Telephone cableNote:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.