This is 19" 1U rack mount bracket for a Netgear 8-port Network Switch (GS308PP). It's pretty beefy because it will be in a portable case and need to stand up to a lot of rough handling. I printed this with PLA on a Bambu Labs A1 Mini, so I designed it as four separate parts. It's assembled with all M3 size screws and feels very sturdy with no sagging in the center.
My print settings:
If it's just going into a rack at home, you can probably get away with lowering both of those settings. The left bracket will probably need small supports but it's for non-visible parts.
There are 4 holes to attach the switch from the side, but I ended up only using one on each side. The holes are hard to access and you need a small hex key to get it in. With the bottom screw and one side screw on each side, it feels plenty solid. If you can't get the side screw in, I think it would probably be just fine with the two bottom screws.
See photos for assembly instructions.
The author marked this model as their own original creation.