Netgear's DGND3700's best feature is it can work as a DSL modem and a router. It's also got good performance, if not the best we've seen from a Netgear router. But users looking for a DSL modem/router combo will be satisfied. By Samara Lynn Netgear's N600 Wireless Dual Band Router ADSL2+ combines two functions in one unit: it acts as both a router and a DSL modem. While most Americans use cable modem services for broadband Internet connectivity, DSL is the second most widely-used connection service, particularly in rural part of the country.