The TP-Link ADSL2+ Modem Router (TD-8817) is a 2-in-1 device that combines the functions of a DSL modem and 1-port 10/100 Ethernet router. It also provides a USB interface through which you can connect to the router. It supports the latest ADSL2/2+ standards to provide higher performance (up to 24Mbps downstream) and longer reach from your Internet Service Provider? (ISP) Digital Subscriber Line Access Multiplexer (DSLAM). You can also create a wired network to share your high-speed Internet connection documents photos music videos and printers. The TD-8817 includes a built-in QoS engine that helps prioritize Internet traffic to enable smooth Internet phone calls (VoIP) and ag-free online gaming. In addition this device includes Dual Active Firewalls (Packet filtering and NAT) to help protect your network from potential attacks from across the Internet.