I got an older chenbro SR107 chassis for cheap on an auction site. It’s a very heavy (duty) case.
In the meantime I put a second (newer) 3.5 hotswap backplane/cage into it.
It newer design 3.5 hotswap cage did fit the older SR107 version, but the location of 2 mounting screws changed, so the cage is only held by 2 instead of 4 screws.
