This type of RAM is compatible with IBM, Dell, and HP servers, workstations and motherboards. All modules have been tested before packaging and come with a Hassle-free 30 day replacement warranty. This lot of 4 RAM modules are packaged in ananti-static bag for reliable delivery. Please check the compatibility of the product with your Server/Workstation before your purchase. Lots of 8 RAM modules are also sold (shown in picture). These are also packaged in an anti-static bag for reliable delivery.