Hi, I've had a Time Capsule for a few years now (500GB model) and it is one of the original ones which had the power supply design fault a year or two ago and was replaced via Applecare. I recently bought a new Airport Express (latest model) and originally I intended to extend my network to get better coverage etc but it seems to cause more problems than it solves. For example, my son's x-box seems to get freaked out because it detects two routers with the same SSID and doesn't know how to handle it. There have been a few occasions where I have had to switch off the Airport Express in order to resolve some weird network issue in the house. My question is - would I be better just replacing the Time Capsule with the new Airport Express and then use the Time Capsule as a standalone server on the private, LAN side of the Airport Express? Here is my logical and physical topology - I would appreciate recommendations on how to make best use of these two devices: ADSL (4mbps) from street to Thomson Speedtouch 516v6 ADSL modem. Modem physically next to telephone socket to get best possible ADSL rate. Single ethernet cable out of modem and into ethernet faceplate which leads from living room to upstairs study where my Time Capsule and Mac are located. Another ethernet cable from wall plate to Time Capsule WAN port. Time Capsule provides WiFi to entire house (5 bed detached) with some poor coverage in places (hence wish to extend). iMac connects via gigabit ethernet to Time Capsule LAN port which is useful for bulk file management but main use of Time Capsule is for backup of my wife's MacBook Air and shared iTunes library. Devices in house are a mix of iPhone, MacBook Air, iPad, Apple TV, X-Box and a couple of Raspberry Pi's. Most of these can probably use 5GHz but some will require 2.4GHz I think. My thoughts were to replace the Time Capsule with the Airport Express then connect the Airport LAN port to the Time Capsule WAN port but put it into bridge mode (or whatever it's called) and then connect one of the gigabit LAN ports on the TC to my iMac. That way I can still perform fast data transfers to the TC. Not sure if having the Airport connected to the TC's WAN port would stop the WiFi network from seeing the TC so I might need to connect the Airport to the TC's gigabit LAN ports instead. Anyway, anyone out there able to suggest an optimum configuration of ADSL modem/router, Airport Express(new), Time Capsule(old), iMac(cabled), MacBook Air and other devices(WiFi)? Thanks, Craig.