Interesting test setup for your "brand new" miners.
I mean I always test gear by zip tying the network cable to the fan while mounting the unit on a rack for a simple 10 minute check.
Then I hook up a different network cable and take a second picture to show how tested it really is, and also to prove it can work with different colored network cables.
But, when I'm permanently installing something, it goes onto my test bench, and there it stays with the original packaging materials for months and months until it reaches its end of life.
I guess we do things differently.