TP-LINK TD-W8901G/TD-W8901GB 54M Wireless ADSL2+ Router is a 3-in-1 device that combines the functions of a high-speed DSL modem, wireless G access point, and 4-port Ethernet router. 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).With the TD-W8901G/TD-W8901GB, you can create a wireless network to connect 802.11g/802.11b devices as well as a wired network to connect up to four 10/100 Ethernet devices. The TD-W8901G/TD-W8901GB includes a built-in QoS engine that helps prioritize Internet traffic to enable smooth Internet phone calls (VoIP) and lag-free online gaming. To prevent unauthorized wireless access into your network, the TD-W8901G/TD-W8901GB supports the latest encryption including WEP, WPA, and WPA2. In addition, this device includes Dual Active Firewalls (SPI and NAT) to help protect your network from potential attacks from across the Internet. The TD-W8901G/TD-W8901GB also supports TR-069 which automatically updates the firmware and other settings when they become available from your ISP. Whether it is for a home or for a small office user, the ADSL2/2+ Modem with 54M Wireless Router (TDW8901G/TD-W8901GB) is the ideal all-in-one broad- band and wireless networking solution.