<p>I use the same external hard disk on my Windows machine as my Mac. And speakers not working is kind of silly. Macs don't use some special and rare form of audio plug that doesn't exist elsewhere...</p>
<p>Mac laptops are subject to the same limitations as most Windows laptops (not being able to change much.) But they use pretty much all the same standards.</p>
<p>If you buy a Mac Pro, then everything but the video card is pretty much able to be changed.</p>