NETGEAR WN511B RangeMax Wireless-N Notebook Adapter Wireless-N PC Card delivers exceptional speed and range Delivers up to 270 Mbps of wireless throughput Provides up to ten times the range of 802.11g networ Backwards compatible with 802.11g/b wireless networks Device measures 4.85 x 0.33 x 2.13 inches (WxHxD)