TP-Link TL-WN821N, 2,4GHz Wireless 802.11b g n speed up to 300Mbps USB 2.0 WiFi Adapter. MIMO technology with stronger signal penetration strength, for wider wireless coverage, providing better performance and stability. Built-in antena. Dimension 69 x 21 x 9.5mm. OS Support Windows 8 7 Vista XP. Više informacija na linku