The IOGEAR Bluetooth 4.0 USB Micro Adapter offers Bluetooth connectivity at a fraction of the size of normal Bluetooth USB adapters. About the size of an adult fingernail, the IOGEAR Bluetooth 4.0 USB Micro Adapter allows users to connect to all the latest Bluetooth devices like cell phones, PDAs, mice, keyboards and more. Because the IOGEAR Bluetooth 4.0 Micro Adapter is so small you can easily plug it into your computer without blocking any surrounding USB ports. The IOGEAR Bluetooth 4.0 Micro Adapter allows users to connect up to three Bluetooth devices together and transfer even the largest files quickly and easily. With the Micro Adapter's lower power consumption, you can enjoy longer battery life on your notebook computer and other devices. This Bluetooth Class 2 adapter is compatible with PC computers, and offers a wireless range of 30 feet. It is great for a wide range of applications and smaller form factor devices in the healthcare, fitness, security and home entertainment industries. Device Type: Network adapter Form Factor: External Interface (Bus) Type: USB Dimensions (WxDxH): 0.7 in x 0.8 in x 0.4 in Weight: 0.2 oz Data Link Protocol: Bluetooth 4.0 Bluetooth Class: Class 2 Data Transfer Rate: 3 Mbps Frequency Band: 2.4 GHz Compliant Standards: Bluetooth 1.1, Bluetooth 1.2, Bluetooth 2.0, USB 1.1, Bluetooth 3.0, Bluetooth 4.0 System Requirements: Microsoft Windows Vista / XP / 7 Manufacturer Warranty: 3 years warranty Device Type: Network adapter Form Factor: External Interface (Bus) Type: USB Connectivity Technology: Wireless Data Link Protocol: Bluetooth 4.0 Bluetooth Class: Class 2 Bluetooth Profiles: Dial-up Networking Profile (DUN), File Transfer Profile (FTP), Headset Profile (HSP), Object Push Profile (OPP), Serial Port Profile (SPP), Synchronization Profile (SYNCH), LAN Access Profile (LAP), Fax Profile (FAX), Generic Access Profile (GAP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) Data Transfer Rate: 3 Mbps Line Coding Format: GFSK, 4 DQPSK, 8 DPSK Frequency Band: 2.4 GHz Max Range Indoors: 33 ft Compliant Standards: Bluetooth 1.1, Bluetooth 1.2, Bluetooth 2.0, USB 1.1, Bluetooth 3.0, Bluetooth 4.0 Antenna: Internal Connections: 1 x USB - 4 pin USB Type A Encryption Algorithm: 128-bit AES Compliant Standards: RoHS, WEEE Software Included: Drivers & Utilities OS Required: Microsoft Windows Vista / XP / 7 Width: 0.7 in Depth: 0.8 in Height: 0.4 in Weight: 0.2 oz Service & Support: 3 years warranty Service & Support Details: Limited warranty - 3 years Min Operating Temperature: 32 °F Max Operating Temperature: 122 °F Humidity Range Operating: 5 - 90% (non-condensing)