* Support Skype Software operation usage. * LED blinking with power. * Four kings of telephone ring switch. * Support 100 Sets of shortcut player codes. * USB2.0 interface available * Support telephone mute function. Package include: * USB telephone(USB cable included)x1 * Telephone driver Software with CDx1System requirements: * Windows2000/XP,400MHzCPU,128MB memory. * 10MB hard dish space,ADSL or cable modem.