Which form factor is most likely to contain a 3.5 inch hard disk or hybrid disk drive?

The form factor that is most likely to contain a 3.5 inch hard disk or hybrid disk drive is the desktop. Desktops typically have ample internal space to accommodate larger drives, including standard 3.5 inch hard disk drives, which are commonly used for their higher storage capacities and cost-effectiveness. This drive size is often integrated into desktops due to their power requirements and the cooling systems available in this form factor.

Other options, such as tablets and notebooks, generally strive for portability and compactness, leading them to use smaller form factors like 2.5 inch or even M.2 SSDs, which fit better into their slim designs. Servers can have configurations that include 3.5 inch drives, but typically, a desktop would first be expected to contain this size due to its common usage in personal and business computing. Without needing to prioritize the high density or cooling requirements of servers, desktops readily incorporate 3.5 inch drives for everyday use.