This design is for remote PC power and reset buttons. The buttons connect via a USB 2 cable to a PCI slot mounted port that can optionally also have power and reset buttons.

Note that the remote switch is deliberately kept small so fitting the components is a bit tight, but it's definitely possible! I held my breakout boards in via rivets and glued the lid on.

Here are links for the USB A and USB B breakout boards and the buttons used, though of course they could go out of stock or change at any time. Step versions of all models are included to facilitate other components being substituted.

USB type A breakout Board:

https://www.ebay.com/itm/303637001255?hash=item46b22cf427:g:x-MAAOSw4ERZbaWe

USB type B breakout board:

https://www.ebay.com/itm/233053740645

Buttons:

https://www.amazon.com/gp/product/B07FS55G9P/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1