A small outline dual inline memory module (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 & thinner than regular DIMMs The gold pins on the bottom of the SODIMM provide a connection between the module & a socket on a larger printed circuit board The pins on the front & back of a SODIMM are not connected 200-pin SODIMMs are used to provide DDR & DDR2 SDRAM memory for notebook computers 200-pin SODIMMs are available in PC2700 DDR SDRAM PC3200 DDR SDRAM DDR2 PC2-6400 SDRAM DDR2 PC2-5300 SDRAM DDR2 PC2-4200 SDRAM & DDR2 PC2-3200 SDRAM To use DDR or DDR2 memory your system motherboard must have 200-pin SODIMM slots & a DDR- or DDR2-enabled chipset A DDR or DDR2 SODIMM will not fit into a standard SDRAM SODIMM socket (Information about which memory technology your system uses is included in the Crucial Memory Advisor™ tool) The number of black components on a 200-pin SODIMM can vary but it always has 100 pins on the front & 100 pins on the back for a total of 200 200-pin SODIMMs are Approx. 2625 inches long & 125 inches high though the heights can vary Like 144-pin SODIMMs 200-pin SODIMMs have one small notch within the row of pins; however the notch on the 200-pin SODIMMs is closer to the left side of the module Memory Memory layout (modules x size) 2 x 2 GB Internal memory 4 GB Component for PCserver Memory form factor 200-pin SO-DIMM CAS latency 6 Memory voltage 18 V Module configuration 256M x 64 Unbuffered memory Yes ECC No Memory clock speed 800 MHz Internal memory type DDR2