Question Voltage stabilizer plugin boards for motherboard?

[MeeLee]

Are there any voltage stabilizer plugin boards for motherboards? (a small board with caps, can be PCIE, m.2, or 4/6/8pin PSU plug)?
I know they make cheap USB versions of it, but I need it for 12V.

 

[drivinfast247]

No. Why do you think you need one?