best usb dongle for router

1.Super miniature size: 2.2 x 1.8 x 0.7cm

2.Compliant with Bluetooth v2.0 specification

3.Class I operation

4.Powered by PC

5.Full speed USB interface, compliant with USB 2.0

6.LED indication

7.Software upgradeable

8.Built-in antenna

9.Frequency band: 2.4 to 2.483GHz

10.Maximum data rate: 3MB

11.Sensitivity: -89dBM at 0.1% BER

12.With 100m operating range

13.128-bit secure encryption

14.Supports: dial-up networking, local area network access, fax and serial port synchronization file transfer, generic object exchange, audio profile

15.System requirement: PC or notebook with USB port, Windows2000, XP , Vista

best usb dongle for router