Glad I bought a few of these the other day.
My PS burnt out today, so I fitted one of the wintecs switches.
Saves you u about £20 on the price of a full PS.
A bit fiddly to fit as you have to disassemble the whole switch but with the help of YouTube you can sort it.
I must admit I don't use a controller at all so this is probable why I burn out a switch every 6 months or so.