These are “New Old Stock” The Micron 256MB 168pin 4K 16chip 16X4 Buffered ECC EDO 50NS Memory MT36LD3272G-5-X is a high-quality RAM module designed for computers and networking devices. With a total capacity of 256MB and a bus speed of 50NS, this EDO RAM module offers reliable performance and error correction capabilities. Made in the United States, this module features a RDIMM form factor and is equipped with ECC memory features for enhanced data integrity. Ideal for both personal and professional use, this memory module provides fast and efficient data processing for a seamless computing experience.