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What does SODIMM stand for?

SODIMM stands for small outline dual inline memory module. These small modules are used primarily in laptops and Apple iMac systems.

An SODIMM consists of a number of memory components (usually black) that are attached to a printed circuit board (usually green). SODIMMs get their name because they are smaller and thinner than regular DIMMs. The gold or tin pins on the bottom of the SODIMM provide a connection between the module and a socket on a larger printed circuit board.

A typical 200-pin SODIMM is pictured below: