4 port wired switch, supports WiFi Wireless-N (pre-N, or draft 802.11n), offering enhanced speed improved range and fewer dead spots when communicating with other Wireless-N equipment, backwards compatible with Wireless-G and ?B devices, advanced firewall protects your network from attacks and unauthorized access, firewall features include Stateful Packet Inspection (SPI), network address translation (NAT), with VPN pass through, wireless security provided by WPA2, WPA, and WEP encryption.