Razer Dock Chroma TB5 Under Desk Mount Holder / Halter für Razer Dock unter Tisch Montage

This holder has an inner volume of  207.4 mm x 85.8 mm x 31.6 mm. You can scale it with use of the rule of three  to use it for other things, e.g. power supply:

If, for example, an inner height of 40 mm is required, the scaling factor for the z-axis in the slicer is calculated as follows:
z = (100 × 40 mm) / 31.6 mm = 126.58%

For the remaining axes, the formula is obtained analogously.