I used this with 2 x Neutrik Ethercon connectors and Adam Hall IEC Mains Socket, blanked off the remaining. The IEC connector fits without a hitch, but I found the D cutouts weren't quite right for Neutrik sockets, and the sockets mount at around 15 degrees off, which looks odd, but at least is functional. The rolled edges give it superb rigidity, so it's easy to push connectors into the sockets without it bending at all.