Difference is ATA or SATA.
EDIT: FREE SHIPPING ON BOTH ITEMS. LIMIT ONE PER HOUSEHOLD FOR THE ATA DRIVE. THEY ALSO CHARGE SALES TAX FOR AZ, CA, GA, OH, TX, NV, WA, IL, IN. I HAVE NO IDEA ON HOW MUCH THE DRIVES COST AFTER TAXES. REPORTEDLY(valleyvampiress), CA ORDERS COME OUT TO $97.19. AND...