ADSL2+ Ethernet/ USB Combo Router* The DSL-526B ADSL2+ combo modem router is an affordable high-performance ADSL device for home and the small office. With integrated ADSL2/ 2+ supporting up to 24Mbps download speed, firewall protection and Quality of Service ( QoS) , this router provides all the essentials that a home or small office needs to establish a secure and high-speed remote link to the outside world.