@isaacmehler just to reiterate what my colleague is saying. You may need to try and match the switch from another board. Here is the schematics that @jayeff linked to [document|40692] The power button on this is shown on page 49
[image|3519329]
Going by that description, it is a Diptronics 4 position 2 hold illuminated switch. Now, head over to Mouser.com and check [https://www.mouser.com/c/electromechanical/switches/tactile-switches/?illuminated=Illuminated&m=Diptronics&srsltid=AfmBOoqPdKHqbTYrTvGCEQlV8pmnaCStVpdyFuMiOvPyvzfjqJolIFj9|those switches] You most likely can match it up. I am sure there are other places then Mouser as well, its just that I know their stuff. No, I don't get any kickbacks :-)
This is not an answer but a mere augmentation to what my colleague has already referred to.
Sorry, I could not attach the boardview on here. but let me know if you want it so I can provide that for you as well.