It is completely compatible with 4.0, 3.0, 2.1 and 2.0. Its Data transfer speed goes up to 3 Mbps. Its design is perfect plug & play and it supports wake on W-Lan and Wake on Bluetooth.It works perfectly for up to 20 meters range. It’s so small in size that can almost hide on the laptop after plugging on USB.

This mini Bluetooth 4.0 EDR USB dongle adopter works perfectly in Windows 98, Windows 2000, Windows XP, Windows Vista, Windows 7 and Windows 8 in 32 bit and 64 bit also.Its small in size, wide working range, all version support and high transmission speed make it a perfect device for Bluetooth connection for most of the operating system