Sony VAIO VGN-SZ791N/X 13.3" Laptop (2.5 GHz Intel Core 2 Duo T9300 Processor, 4 GB RAM, 250 GB Hard Drive, Vista Business)

Networking, Connectivity & Expansion
Be ready for the next platform in wireless connectivity with the integrated Intel Wireless Wi-Fi Link 4965 AGN LAN chip. Based on the draft 802.11n Wi-Fi specification, it offers up to five times the performance and twice the wireless range as existing 802.11g wireless. It's also backward compatible with 802.11b/g networks (commonly found in home routers and Wi-Fi hotspots) as well as 802.11a networks (which has a higher throughput, but more limited range--great for closed office environments). You also get super-fast wired connectivity, with a Gigabit Ethernet port (10/100/1000).