Changing to a new Router the Linn DS will no longer connect
Some new Routers, such as TalkTalk, have network sockets that only support a high speed network (1000-BaseT). The Linn DS will only has has the network components that support 100-BaseT connection.
Your PC laptop will work on this Router socket as your PC will support 10/100/1000-BaeT connections. The simple solution or test is to add a low-cost network switch that supports (10/100/1000 Base-T connections) such as a Netgear GS205