The TP-Link ADSL2+ Router (TD-8817/TD-8817B) is a 2-in-1 device that combines the functions of a DSL modem and 1-port 10/100 Ethernet router. It offers both Ethernet and USB ports for flexible connectivity. It supports the latest ADSL2/2+ standards to provide higher performance (up to 24Mbps downstream and 3.5Mbps upstream) and longer reach from your Internet Service Provider's (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/TD-8817B includes a built-in QoS engine that helps prioritize Internet traffic to enable smooth Internet phone calls (VoIP) and lag-free online gaming. In addition, this device includes Dual Active Firewalls (SPI and NAT) to help protect your network from potential attacks from across the Internet.