Hello,

I'd like to ask you which are the exact measures "coordinates" to make the AT keyboard hole in a full metal ATX shield by ourself, for example starting from the right corners of a classic atx metal case shield place, measuring to find the exact center of the AT keyboard connector and begin to drill the metal. I know I might make it simply installing the mainboard and saving the point where to make the I/O shield hole but I wanted a precise hole without removing too much metal on the side of the new I/O shield to adapt an AT mainboard into an ATX case.
Thanks.