WHAT THIS PRODUCT DOESThe TP-LINK TL-WN722N Wireless High Gain USB Adapter allows you to connect a desktop or notebook computer to a wireless network and access high-speed Internet connection. Using AlignTM 1-stream technology based on 802.11n technology. TL-WN722N provides a better wireless signal than existing wireless 802.11g technology. Most of all. equipped 4dBi detachable antenna can remarkably boost your signal range and speed. Now you can get a better Internet experience. such as downloading. gaming. video streaming and so on. HIGH GAIN DESIGNWith powerful 4dBi detachable antenna. the TL-WN722N remains excellent performance in the long range and bad environment. it can receive signal from wireless base even separated by 2 floors. QUICK SECURE SETUPQuick Security Setup is a handy feature that allows users to almost instantly setup their security simply by pressing the QSS button on the wireless adapter. it automatically establishes a WPA secure connection. instantly protecting your network.Features- 150Mbps wireless transmission rate;- Provides two methods of operation: Infrastructure and Ad-Hoc;- Quick Secure Setup. complies with WPS for worry free wireless security;- Supports 64/128-bit WEP. complies with 128 bit WPA standard(TKIP/AES). supports MIC. IV Expansion. Shared Key Authentication. IEEE 802.1X;- 4dBi omni-directional antenna detachable;- Supports Windows 2000/XP/Vista/7 OS;- Seamlessly compatible with 802.11b/g/n devices.