DIMM

A DIMM, or Dual In-Line Memory Module, is a type of computer memory module used in desktop, laptop, and server computers. It is a circuit board that contains memory chips and connects to the computer's motherboard. A DIMM is often called a "RAM stick" due to its shape and size. A DIMM comprises a series of dynamic random-access memory integrated circuits that are mounted to its circuit board. DIMMs are the predominant method for adding memory into a computer system. The vast majority of DIMMs are standardized through JEDEC standards, although there are proprietary DIMMs. DIMMs come in a variety of speeds and sizes, but generally are one of two lengths - PC which are 133.35 mm (5.25 in) and laptop (SO-DIMM) which are about half the size at 67.60 mm (2.66 in).