This Bluetooth adapter is a fingernail-sized unit that can plug into laptop or tablet's USB port for instant functionality. This device uses standard V2.0 and USB 2.0 technology to deliver quick connection times and up to 3x faster data transfer speed than older v1.2 adapters. Get your laptop sharing data with your Bluetooth-enabled PDA, headset, printer and other devices in no time. Its amazingly compact design makes it easy to fit into any travel bag or laptop case. Supports Bluetooth voice data. Supports multiple languages. This Bluetooth adapter does not need any drivers for use on compatible operating systems (see below). Specifications: Bluetooth specification V 2.0 & V 1.2 Compliant. I/O Interface : USB compliance. Supported profiles : networking, Dial-up, Fax, LAN access , and Headset. Operating systems : Windows 98, 98SE, ME, 2000, XP, VISTA and Windows 7. Receiving / Sending range : 0-100m (realistically 10-20m in open space. Maximum operating range depends on environmental factors.) Data rate : up to 3Mbps. Input Power: DC 5V (USB Power).