Complying with IEEE 802.11a/b/g, the TL-WN553AG adopts TP-LINK “Extended Range” WLAN transmission technologies, resulting in transmission distances of 2-3 times that of normal products, transmission range is extended from 4-9 times.The TL-WN553AG provides multi security protection. Complying with 64/128/152-bit WEP Encryption, WPA/WPA2, IEEE 802.1X, TKIP and AES, the TL-WN553AG has super-safety data communication ability. With it´s strong firewall, the TL-WN553AG features effective security to protect the wireless network from intruders.With the external antenna, the TL-WN553AG can adapt to different operational environments and let the user connect to the Wireless network easily. The TL-WN553AG also supports Seamless Roaming and is compatible with other 11a, 11b, 11g WLAN equipment.