I like that it has a matte finish on it, which makes it look more professional and appealing. The design of the Asus Usb-Bt400 Bluetooth is very sleek and modern. Not as durable as other models on the market

OS Support: Windows 8, 32bit/64bit / Windows 7, 32bit/64bit / Windows XP, 32bit/64bit.

Frequency Band: 2.4~2.4835GHz unlicensed ISM band.

USB 2.0, Up to 3Mbps and Over 10 meters in free space.

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Asus usb bt400 review