This can be used in a vertical or horizontal orientation.

There are two “keepers” that can be used to make sure the hub doesn't slide out.  These will use M3 screws.  The holes for the screws are perfect size to allow the M3 screw to make it's own threads as you tighten them down.

There is also a “Wire Hider” that you can slide the wires into, and then push into place.  If it doesn't push into place as expected, too loose, wants to fall off, (depending on your printer/filament/etc), then you can use the same screws that were used to secure the mount, in these, (Holes and depth are the same size).  The one model that is included worked with both sides of the mount. It's use can also be seen in the photo I included.

You can install the mount, then slide the hub in, install the keepers, OR, install the keepers, put hub into the mount, and install with it already placed in the mount.
 
No Supports are needed.  I only tested this on my X1C, so hopefully no issues with any other printers.


This is the USB Charging Hub that is used in this model: https://a.co/d/aTdAcku
These are the screws that this model is designed for: https://www.lowes.com/pd/Power-Pro-One-6-x-1-in-Bronze-Epoxy-Flat-Exterior-Multi-Material-Screws-1-lb/1001098078