The device is a plug-and-play USB device that works without LAN card support and external power. The compact and exquisite device will bring you the convenient and enjoyable broadband world of online games, remote education, network conference, video-on-demand, Instant Message and other multimedia applications Features:DMT modulation and demodulation Full-rate adaptive modem USB bus-powered; an external power supply is not required USB1.1 Full Speed, up to 8Mbps data transferring speed. Compatible with all T1.413 Issue 2, ITU G.DMT (G.992.1), and ITU G.lite (G.992.2) compliant CODSLAM equipment Software upgradeable ATM SAR performed in software driver Includes a Microsoft Windows control panel monitoring program for configuring the adapter and checking the status of the connection Tone detection for low power mode Provides an RJ-11 connector for connection to the telephone line Supports DSL downstream data rates up to 8 Mbps, upstream data rates up to 1MbpsTechnical Specifications:  ADSL Standard compatibility ITU G.992.1 (G.DMT), up to 8Mbps downstream speed and 1Mbps upstream speed ITU G.992.2 (G.Lite) ANSI T1.413 Issue 2RFC Protocols PPP Over ATM ( PPPoA ) LLC ( RFC 2364 ) ( WAN ) PPP Over Ethernet ( PPPoE ) LLCSNAP ( RFC 2516 ) ( WAN ) Bridge IP Over ATM LLCSNAP ( RFC 1483 ) ( LAN ) Classical IP Over ATM ( RFC 1577 )Cables & Connectors 1 RJ-11 cable & 1 USB cableLED Status 1 LED indicates Transmit/Receive data 1 LED indicates Power Operation and Management Windows-based ADSL diagnostic tool for Windows 98/ME/2000/XP/Windows 2003 Server/VistaOperating System Support Windows 98/ME/2000/XP/Windows 2003 Server/VistaPhysical Description Dimension : 11.2cm (L) x 8.7cm (W) x 2.5cm (H)Operating Environment Operating +0C ~ +50C Non-operating -40C ~ +85CHumidity Operating 10%~95% RH Non-operating 10%~95% RHStandard Approval CE CLASS B. FCC PART 15 CLASS B FCC PART 68 UL 1950