Some VESA mounts that you can glue with some Epoxy on the back of any laptop computer.
The models with “nut” have a slot where you can insert a captive nut as the picture shows. You have to set in the Slicer a Filament Change in the layer before it starts printing over the slot, after inserting the nuts, you can resume the printing.
FAQ
Which VESA do I have?
https://www.vesa-standard.com/vesa-standards.html
The author hasn't provided the model origin yet.