A crude shelf bandsawed from a plank moves the Sena PS410 serial server and an old Ethernet switch off the bench:

The brackets holding it to the studs came from a 2×4 inch scrap:

Obviously, the Basement Laboratory lacks stylin’ home decor.
None of which would be worth mentioning, except for some Shop Calculations scrawled on the 2×4:

It’s in my handwriting, although whatever it related to is long gone.
Trigonometry FTW!