This CPU holder is suitable for all combo wall-rail systems by Dataflex. The width adjustable clamping mechanism allows for almost all common desktop PCs and workstations to be firmly installed into the CPU holder. Like all wall-rail system components, the holder is adjustable in height along the rail. This allows it to be mounted both above and below a monitor. - Compatible with all Dataflex combo wall-rail systems - Includes wall-rail glider 56.092 - Suitable for PCs with a thickness of 151-257mm - With convenient adjustment knob - Able to be mounted to a wall separately without rail system - Excluding plugs and screws for separate wall mount