300Mbps Wireless N USB Adapter TL-WN821N Highlights: - Excellent N speed brings best experience for HD video streaming or Internet calls - MIMO technology with stronger signal penetration strength, wider wireless coverage, providing better performance and stability - Easy wireless security encryption at a push of the QSS button - Supports Windows 2000 / XP / Vista / 7/ 8.1/Mac Os X 10.7 /10.8/ 10.9 /10.10 /Linux