For the Listed Models Only. Please select the size/capacity you need from the "Capacity per Module" list.  Fully Tested works perfect. Money Back Guaranteed. 90 days warranty Drives come with a 90 days Warranty. If there are any hardware issues in that time it can be returned for a Replacement. Shipping Orders are securely packaged and shipped  within 1 business day by USPS First Class mail. Usually arrives 3-5 days.  What Ram will I receive? The brand and model will vary depending on stock but will be from a quality manufacturer Adata, Samsung, Kingston, SK Hynix, Crucial, Micron, etc).  If you have any questions please feel free to send a message. Thanks for looking