No External power required, Compatible with USB 1.0 / 2.0 / 3.0, USB Drive free Connection, Omni-Direction and support PnP USB. Built-in Ring and Sound Card.
Support: Skype, Wechat, UUcall, Yahoo, Sip Discount, X-Liute, Eyebeam, X-pro, Sipgate, Vonage, UBIFONE, Imtel, Voip Buster, Voip Discount, Voipcheap, VOIP Stunt, SparVOIP, INTERNETCALLS, NetAppel, YpoivyY, FreeCall, Webcall, VOIP RAIDER, VoipWise, Onet2phone
Built-in Echo tone to eliminate chip, can be a music player. Work for laptop as a portable design.
