A dual inline memory module (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. 184-pin DIMMs are used to provide DDR SDRAM memory for desktop computers. Standard 184-pin DIMMs are available in PC1600 DDR SDRAM, PC2100 DDR SDRAM, PC2700 DDR SDRAM, & PC3200 SDRAM. This memory is designed for the following systems: Giga-Byte GA-K8NNXP-940; Tyan S2891 Thunder K8SRE; Tyan S2892 Thunder K8SE; Tyan S2895 Thunder K8WE; MSI MS-9161 (K8D Master 3-133-FA4R).