1) USB 2.0 supported
2) With HID (Human interface Device)
3) With PID (Physical interface Device)
4) ALED to indicate power and linking status
5) Support SIP, H. 323, MGCP,IAX2
6) Supports Skype,
6) MSN, Xpro, Net2Phone, X-Pro, X-lite, eyeBeam, Firefly,
ICQphone, Yahoo Call Center, etalk, AIM phone, SJ phone and StanaPhone
7) Easy to be used as mobile phone
8) 16-bit USB sound card inside
9) Echo cancellation, noise reduction, full duplex communication
10) Adjustable volume for handset and ring incall
11) PC-to-PC and PC-to-phone operation
12) Supports E.164 dialing rule
13) Power via the USB port, no need of power adaptor