I actually brought this for the Samsung Odysey G9 which has a deeper recess and is not compatible with this monitor.

However I found the holes lined up and it was only a short distance so I stacked 2 high Rubber Spacers inbetween the monitor and these brackets and got some 40mm M6 Bolts and fitted it like that, beats paying the £70 people want for the adapter for the G9! :)