Hard Disk Geometry. Physical Sizes ( Also called Form Factor) Hard Drives currently come in 2 main sizes: 2.5” and 3.5” 2.5” Drives are for laptop computers. - ppt download
SSD vs. HDD: What's the Difference? | PCMag
Storage Shift: The Time May Be Right for a New Form Factor | ITPro Today: IT News, How-Tos, Trends, Case Studies, Career Tips, More