This is a bracket to rack mount a small network switch. It is printed in 3 modular parts. Due to each part being modular, you can mix and match to mount up to 3 network switches in a 1U space. 

The hardware required for this system is as follows:

• 2 x M3x10mm Bolt
• 2 x M3 Nut

These switch mounting modules are parametric, allowing you to customise the dimensions to suit your own switch. The network switch used in this example was a TP-Link LS105G, therefore the default values are for this switch.

All parts were printed in Prusament PETG, face down at 0.1mm layer height, 30% infill and supports on only the male interlock sides. I suggest organic supports for best results. These settings worked for me but your milage may very.