The product is a Micron 256MB DDR1 SDRAM DIMM with a bus speed of PC2100 (DDR-266). It has a total capacity of 256MB and comes in a single module with 200 pins. The model number is MT16VDDT3264AG-265A1. This RAM module is designed for desktop computers and is a reliable choice for upgrading or replacing existing memory modules to improve system performance. Comes exactly as shown in photos. BRAND NEW NEVER USED Message me with any questions, comments or offers.