Its a switch panel designed to be mounted under the desk.
I use it to power my computer on (well … because it feels awesome)
for the button I bought these: https://www.amazon.de/gp/product/B08L49F7DV/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
for the switch I bought these:
https://www.amazon.de/gp/product/B08G4R8D3K/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
removed the front power button connectors from my motherboard and cut up a jumper wire to replace it. Soldered a bell wire onto it and connected it with the switch and button so that the switch must be on, and the button pushed to start my computer :)
The author marked this model as their own original creation.