These mounts leverage the skadisnut system: https://www.printables.com/model/228663-t-nuts-for-ikea-skadis-pegboards
One side mounts to the peg board, the other side uses brass inserts and screws to attach to the devices.
Works with:
Ubiquiti Unifi Switch 8
https://store.ui.com/collections/unifi-network-switching/products/unifi-switch-8
Ubiquiti Unifi Security Gateway
https://store.ui.com/products/unifi-security-gateway
Belkin 12 port Surge Protector:
https://www.amazon.com/dp/B000J2EN4S
Also works with Gigabyte NUC GB-BLCE-4105 (needs m3 cap screws)
Threaded Inserts:
https://www.amazon.com/dp/B09TNK8GD6
M3 Countersunk:
https://www.amazon.com/dp/B073J4CRZV
Surge Protector:
https://www.amazon.com/dp/B000J2EN4S
The author hasn't provided the model origin yet.