Hi
First of all sorry for my bad english !
since the begining my magic key didn't work sometime it was fine because most of the time, when i put it in the neogeo with the 161 in 1 2 or 3 times the cartridge started again.
but these days i have the same probleme (you can see it in the photo) but now it doesn't start anymore.
when i opened the magic key i found someting weird.
in this photo i found on internet we can see a part on the left that is "down"

but on my mvs it was up
when i try to put it "down", this part broke frome the magic key (i hope you understand my bad english)
i can give you some photos of whats happenend when i put the mvs before the part broke :




and the neogeo and her poweradaptator :


does any one can tel me please what is this part i broke because i want to replace it and i dont know what to buy

thanks for all