Thread: Motherboard Form Factor

Early PCs used the AT form factor (The physical size and shape of a device. It is often used to describe the size of circuit boards. The physical size of a device as I ured by outside dimensions. With regard to a , drive, the form factor is the overall diameter of platters and case, such as 3.5" or 5.25", not the In terms of storage capacity. If the drive is a 5.25" IT: factor it means that the drive is the same size as '5 diskette drive and uses the same fixing points) d 12" wide motherboards, The sheer size of an AT motherboard caused hems for upgrading PCs and did not allow use of . Increasingly popular slimline desktop cases. These lblems were largely addressed by the smaller version of the full AT form factor, the Baby AT, introduced '989. Even as this remains a common form factor, ne have been several improvements since. All Igns are open standards and as such don'trequire rthcation. A consequence is that there can be some wide variation in design detail between different nufacturers' motherboards.