About ADSL-2640T With Firewall Protection/QoS Control Integrated ADSL, 802.11g Wireless LAN & 4-Port Switch High-Speed ADSL2/2+ Connection DoS & SPI Firewall Protection QoS & SNMP Management Support Tech. Specification Request a Quote Features & Other Info The DSL-2640T wireless ADSL router is a versatile, high-speed remote router for home and the small office. With integrated ADSL2/2+ supporting up to 24Mbps download speed, firewall protection, Quality of Service (QoS), 802.11g wireless LAN and 4 Ethernet switch ports, this router provides all the functions that a home or small office needs to establish a secure and high-speed remote link to the outside world.