I recently extended my wireless network by extending my Time Capsule signal with an Airport Express. Now that I have two access points for the same wireless network, what determines which access point a device connects to? Also, if a device connects to the AE will this connection be slower than the Time Capsule connection?
Yes, double hop wireless will be slower BUT if you cannot get wireless with a direct connection to the main router than it is much faster than nothing. If you have a choice.. a wired or alternative link like EOP is far superior to using wireless repeaters. Every wireless hop will reduce the speed by that amount.