Dell Equipment again...

Dell is actually the reason I registered this domain, the orange cable and this sticker on the power supply socket. You need to click on the picture and look at the yellow label in this one, can anyone find any reasonable explanation to why this sticker needs to cover the place you plug a standard power cord into?
And also, the note on which screw and nut goes in what hole is pretty silly, if you have a Dell PowerConnect 6024 (Layer 3 switch) like this and you dont understand that a square nut goes in a suqare hole you don't deserve to have this switch (which is awesome btw, $3K at the moment, redundant psu and fan).