The Mac Pro is smaller out of the box. It becomes a lot less small when you have to attach a ton of peripherals to it because you can't expand the thing and you have to hook up a bunch of external stuff. You can definitely use the machine without doing that, so it certainly can be smaller, but if you're doing…

Consumer service is very important to me. Buy an Apple computer.

Maybe you, but I have 4 USB ports on my system!
:-p

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