Samsung Memory Mixed Speeds- 512MB DDR2 Desktop RAM PC2-5300U PC2-4200U- M378T6553EZS-CE6 x1, M378T6553CZ3-CD5 x3- Lot of 4 - cables/accessories not included- Please see the photos for details on the item's condition and specifications.We have 30 day returns money back guarantee . We do our best to describe everything accurately. This item is sold as shown are pulled from working environments and may include components that are untested, incomplete, or non-functional. While we do our best to describe each item accurately, we cannot guarantee the performance or compatibility of every part. See photos for more details. By purchasing, you acknowledge and accept this item is being sold as-is with no guarantees beyond what is stated.