D-Link DWA-643 300Mbps Wireless N ExpressCard Adapter D-Link Xtreme N DWA-643 802.11n Wireless LAN ExpressCard/34 Adapter General Features: ExpressCard/34 interface Powered by Xtreme N technology Delivers up to 14x faster speeds and 6x farther than wireless G networks Wirelessly stream HD video, share files, and go online Access secure wireless networks using advanced WPA and WPA2 encryption