Why? Because the Time Capsule is also a wireless Airport base station.Where do I find this and once found will that allow me to get it connected properly? I have both Mac a. What seems to be giving me the problem is it asks for the DHCP Client ID#. I got a 500 GB Time Capsule cheap and I am having difficulty setting it up. I have run out of space on my 250 GB HD.This sort of makes sense, as Capsule is essentially an alternative or replacement for AirPort Extreme, plus a hard drive Apple tried to make the bigger, more expensive product look a little more deluxe. The chrome Apple on Time Capsule’s top, as well as its larger physical size, are the only major stylistic differences between the two otherwise extremely similar designs.