Q:
A: That depends, most new motherboards use SATA, so if the HDD is SATA then most likely yes, however if it is IDE, then probably not. SATA cables are the skinny approx 1/2 inch wide cables, and IDE are the approx 2 inch wide ribbon-like cables.
COMPUTER BUILDERS: Can I use the HD I'm using now and put it on a brand new motherboard and processor?