HP Z2 Mini/Z2 Tower/Z4/Z6 Depth Adjustable Fixed Rail Rack Kit. This fixed rail rack kit is designed for mounting your device in a stacked position, ensuring efficient use of space and easy access. The adjustable depth feature provides flexibility for various HP Z-series workstations, including the Z2 Mini, Z2 Tower, Z4, and Z6 models. Built with durable materials for reliable performance in server room or office environments. This kit facilitates secure and organized installation of compatible HP hardware.