Trust BT180 CLASS 1 USB BLUETOOTH ADAPTER. Connectivity technology: Wireless. Data transfer rate (max): 0.723 Mbit/s, Bandwidth: 2.4 GHz. Data link protocols: Bluetooth. Minimum system requirements: Pentium 200 MMX CPU Free USB port 32 MB of system memory 30 MB free harddisk space , Dimensions (WxDxH): 85 x 25 x 12 mm, Antenna type: Internal integrated