... .323, MGCP, IAX2, and net2phone protocol 2, Supports Skype, MSN and QQ software 3, USB2.0 port 4 ... Interface Device) feature7, Plug and play to install USB driver8, No driver needed for Win98 SE/Win ... power and linking status 15, Adjustable volume for handset 16, Supports E.164 dialing rule 17, Record ... 18, LED indication 19, Powered via the USB port with no need for a power adapterPacking:Products ...