So, my sister has a couple of components in a room that needs an ethernet cable connected directly to them. The router is in another room so I bought her an Airport Express (should be arriving tomorrow). I originally thought she only needed one device connected and I had read that the Airport Express can be used as an extender/access point. Now that she needs two devices, can I simply connect a switch to the Airport Express and connect both devices? I've never tried a wireless extender or access point before. Thanks!