Lol 
What switch does my rubber-dome have?
The type of switch your keyboard has is called "rubber dome" (short for rubber dome over membrane). Some mechanicals (like the BL82 by TG3) have a polymer sheet ower the switches, combining the two. Keyboards with switches by Topre have rubber domes over a capacitive spring and sensor. Very few keyboards have "mechanical" key switches that also incorporate rubber domes. Pretty much the only one I know of is that cortronics (hall effect) switch that used a RD for the spring. Some showed up in Canada a while ago.
Almost all rubber domes are just that: rubber domes. There is a sheet of them over a membrane. Your Dell keyboard is like this.
I haven't seen one, but I imagine the blue is a "slider" that sits over the rubber dome. If you take it apart, I am sure you will be able to see this. There are no properly "mechanical" switches hidden under there.
Sorry for the longer reply. I just thought there might be a bit of a miscommunication between all the "look it's a RD" people and you. Further posts to that effect really didn't serve to explain, so I took it upon myself.
That said, I will attest that the dell Quiet Key is a cut above most rubber dome keyboards.
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Back on topic: Who will receive their RACE first?
