The Rack Mount Solution for the Workstations features a locking tray that secures to the workstation & adjustable fixed-rails that attach to the rack. This kit offers a low-profile design with minimal impact on space constraints, allowing for high density rack configurations. Highlighting flexibility & safety, the kit provides an affordable & simple rack mount solution for use with any of HP's current entry-level workstations. Designed For HP 10642U; Rack 10614, 10622, 10622 G2, 10636, 10636 G2, 10642, 10642 G2, 10647, 10647 G2, 10842, 10842 G2, System E, System/ E25, System/ E33, System/ E41; Workstation xw 4300, xw 4400, xw 4600, z 200, z 210, Z220, Z230, z 400, Z420