A Dual In-line Memory Module (DIMM) is a type of computer memory that consists of a series of memory chips mounted on a small circuit board. It connects to a computer's motherboard through a set of pins on both sides, allowing for efficient data transfer. DIMMs are commonly used in desktop computers and servers to provide the necessary memory for running applications and operating systems. DIMMs come in various types, including DDR, DDR2, DDR3, and DDR4, each offering improvements in speed and energy efficiency. The capacity of a DIMM can vary, typically ranging from 1 GB to 32 GB or more, depending on the specific module and technology used.