Congrats! Looks like you're about to roll up your sleeves when you get them
BTW, these 6012 switches are small and neat, but, if you're not going to put them away behind hermetically closed doors, you're going to suffer from some serious noise. They have 4 heavy-duty 40mm fans spinning at max speed. I have the switch in my study with a bunch of additional equipment, so I acquired replacement fans to reduce the noise. Beware that the fan pinout is non-standard, so you'll need to do some soldering to make it work.
Luckily, when the switch is idle, it's quite cool to be run without any fans with its top cover removed, so, at least, you can figure out the pinout using a voltmeter without any risk of frying the thing...