The 2GB (1 x 2GB) 240-Pin UDIMM DDR3L PC3L-12800 Memory Module from Crucial is a 2GB RAM module 240-pin DIMMs are used in DDR3 memory for desktop computers & transmits data more quickly than previous memory modules A DIMM consists of a number of memory components (usually black) that are attached to a printed circuit board (usually green) The gold pins on the bottom of the DIMM provide a connection between the module & a socket on a larger printed circuit board The pins on the front & back of a DIMM are not connected to each other Each 240-pin DIMM provides a 64-bit data path To use DDR3 memory your system motherboard must have 240-pin DIMM slots & a DDR3-enabled chipset The number of black components on a 240-pin DIMM can vary but it always has 120 pins on the front & 120 pins on the back for a total of 240 240-pin DIMMs are Approx. 525" long & 118" high 240-pin DDR3 DIMMS have only one notch within the row of pins This low-density memory module contains 16 chips each providing 128 MB of RAM