Belkin USB Bluetooth Adapter. Connectivity technology: Wireless, Host interface: USB, Interface: USB 2.0. Data transfer rate (max): 3 Mbit/s. Bluetooth version: 2.1+EDR, Frequency band: 2.4 GHz. Compatibility: PC&Notebook. Compatible operating systems: MacOS X 10.2 + Win 98/ME/2000/XP/Vista