Here's my setup. PLDT Fibr Modem to Airport Extreme Base Station. AEBS has a printer connected to it and a WD Mybook 1.5 TB for Time Machine backups. AEBS then connects via ethernet to a Linksys PLSK400. A few rooms away, the other PLSK400 unit is plugged in and is connected via ethernet to my Airport Express and to my Apple TV. No lag HD streaming!