Used D-Link model DSL-520B ADSL2+ modem/router. Although this is a router as well as a DSL modem, it has only one RJ-45 Ethernet port, so you must use an external Ethernet switch or wireless access point to connect more than one device to it. In 2019 I checked that the RJ-45 interface is working and that the DSL port is putting out a signal (by listening to it on my phone), but I don't have DSL service and can't do a complete test. The device has been sitting unused in a box since then. Pick up at our house in Derwood, between Rockville and Gaithersburg (near Briardale Road). [x]