We try to stick with Leviton stuff---and try other brands out in the shop to make sure they fit our stuff (or at least know what to expect at a new customers place).

The larger back side of some inserts have trouble fitting the 2-port surface boxes of Leviton. The insert may fit in the hole--but you can't get two in there.

We try to stick with just one brand of insert, plate and surface boxes if at all possible.

Also, if we stick with Leviton empty patch panels, instead of generic empty panels, we don't have to purchase the plastic 4-port adapters.

It's actually taken quite a while to figure some of this stuff out. We have also been told "Oh, these will fit ANY brand" Right. We have boxes of plates and surface boxes in our shop that won't work with Leviton---out vendor just said to "keep 'em--not worth the trouble to send them back". Too bad everything can't be standard--but it isn't.