Hi-Speed interface 20/40MHz interoperable channels dramatically increase performance Supports Windows 2000/XP/Vista/Win7 OS Seamlessly compatible with 802.11b/g/n devices The BN-WD54G Wireless USB Adapter gives you the flexibility to Install the PC or notebook PC in the most convenient location available, without the cost of running network cables. Its auto- sensing capability allows high packet transfer up to 54Mbps for maximum throughput, or dynamic range shifting to lower speeds due to distance or operating limitations in an environment with a lot of electromagnetic interference. It can also interoperate with all the 11Mbps wireless (802.11b) products. Your wireless communications are protected by up to 128-bit encryption, so your data stays secure.