The Apacer 256MB PC2700 Micro DIMM 78.83019.110 Vintage DIMM is a single DDR1 SDRAM module with a total capacity of 256MB. It has 184 pins and operates at a bus speed of PC-2700 (DDR-333). This vintage RAM module is designed for use in computers and networking devices that require reliable and efficient memory performance. With the Apacer brand known for quality and durability, this DIMM is a solid choice for upgrading or replacing existing memory modules in older systems.