DDR memory is available in different form factors such as DIMM, SO-DIMM, and Micro-DIMM. DDR memory is available in different form factors such as Dual In-line Memory Module (DIMM), Small Outline DIMM (SO-DIMM), and Micro-DIMM. DIMMs are used in desktop computers, while SO-DIMMs are used in laptops and other small form factor devices. Micro-DIMMs are used in mobile devices such as smartphones and tablets.