The product is a 256MB SMART Modular Technologies PC133 133MHz SDRAM SODIMM memory module. This original memory module has a SO-DIMM form factor and a total capacity of 256MB, with each module providing 256MB of memory. It is designed for use in computers and other devices that require reliable and efficient memory technology. The module features non-ECC unbuffered SODIMM RAM technology, making it an ideal choice for those looking for high-quality memory solutions.