This slide rail kit allows the HP DL380 Gen 8 to be installed in any type of server rack. Works with DL380, Gen 8. These rails replace the HP rail kit that would normally come with the sever. This DL380 Gen 8 rail kit allows the server to be installed in typical 4Post server racks as well as 2Post server racks. These rails are considered a dry slide type. They allow the server to slide in and out, but they are not ball bearing slides. Also, the rails do not include a stop catch mechanism that prevents the server from sliding completely out of the rack when removing it for servicing.