SO-DIMM (Small Outline Dual In-line Memory Module) is a type of computer memory integrated circuit that is a smaller alternative to a DIMM and is roughly half the size of regular DIMMs. SO-DIMMs are designed for applications with limited space and require low power consumption. SO-DIMMs are often utilized in laptop computers, small footprint PCs (PC's with a Mini ITX motherboard) and high-end upgradeable office printers.
SO-DIMMs have 72 pins (supporting 32-bit data transfer) or 144 pins or 200 pins (both supporting 64-bit data transfer). This compares to regular DIMMs that have 168 pins and support 64-bit data transfer. 144-pin SO-DIMMs are commonly found in notebook computers.
SO-DIMMs are smaller and thinner than regular DIMMs. The gold pins on the bottom of the SODIMM provide a connection between the module and a socket on a larger motherboard.
