The AR-5381u is an 802.11n (300Mbps) Wireless ADSL2+ router. AR-5381u has four 10/100 Base-T Ethernet ports, a Wi-Fi Protected Setup (WPS) button and a Wi-Fi switch button, one USB Host, which can support 3G USB dongle, and is backward compatible with existing 802.11b (11Mbps) and 11g (54bps) equipment.

The AR-5381u ADSL2+ router also provides state of the art security features such as 64/128 bit WEP encryption and WPA/WPA2 encryption, Firewall, and VPN pass through. The AR-5381u is designed for both residential and business applications that require wireless and wired connectivity to an ADSL broadband network. The AR-5381u supports up to 16 contiguous virtual connections allowing for multiple simultaneous Internet connections. The AR-5381u is also designed with TR-068 compliant color panel, which eases the installation of the modem and makes it more user-friendly.