The TL-WN821N Wireless N USB (Universal Serial Bus) Adapter complies with IEEE 802.11n, IEEE 802.11g, & IEEE 802.11b standards. Wireless transmission rates can reach up to 300 Mbps. The adapter employs MIMO technology & has internal Intelligent Antennas providing even better wireless performance, transmission rates, stability & coverage. At the same time, CCA technology automatically avoids channel conflicts using its channel selection feature. This product supports 64/128-bit WEP encryptions, as well as WPA/WPA2 & WPA-PSK/WPA2-PSK encryptions & mechanisms in addition to the adapters QSS (Quick Secure Setup) feature, allowing users to quickly & easily setup wireless security. This product can also simultaneously operate bandwidth intensive applications such as voice, & video.