ORICO BTA-401 Features with CSR8510 chip Bluetooth 4.0 USB adapter (Newest Bluetooth Version Available) Ready Adapter w/ 3Mbps Data Transfer Rate and 20 meters Range, Compatible w/ Windows WIN8 WIN7 Vista 2003 XP 2000 Me 6 - Plug and Play, Laptops, Luxury, Smart Ready, Low Energy Consumption - Hub, Transmitter, Ultra Mini, Csr, Easy to Connect - Mouse, Keyboard, Controller, Printer, Games, Speakers, Headset, Headphones, Stereo, Music Stream - Dual Mode Support, Micro, Class 2, Exchange, 3mbps Data Transfer, 20 Meters Range. Features with CSR8510 chip, conforms to bluetooth 4.0 standard,downward compatible with bluetooth 3.0, 2.1,2.0,dual mode transmission The farthest transmission distance can be 20m without obstacle Features with USB2.0 interface,Transfer Rate up to 3Mbps Support system: Windows XP/Vista/7/8 and MAC Driver software: CSR Harmony Wireless Software Stack