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4GB kit (2GBx2) 200-pin SODIMM DDR2 PC2-5300 memory module...DDR2-PC5300 CL=5 UNBUFFERED NON-ECC DDR2-667 1.8V 256Meg xτ. 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 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 printed circuit board. The pins on the front and back of a SODIMM are not connected. 200-pin SODIMMs are used to provide DDR SDRAM memory for notebook computers. 200-pin SODIMMs are available in PC2100 DDR SDRAM PC2700 DDR SDRAM and PC3200 DDR SDRAM. To use DDR memory your system motherboard must have 200-pin SODIMM slots and a DDR-enabled chipset. A DDR SODIMM will not fit into a standard SDRAM SODIMM socket. The number of black components on a⏰-pin SODIMM can vary but it always has 100 pins on the front and⎌ pins on the back for a total of 200. 200-pin SODIMMs are approximately 2.625 inches long and 1.25 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.