Washers: Generally made of plastic or paper, these go under the screws
to keep the screw head away from the circuitry on the top surface of
the motherboard. These are now sometimes being omitted in new system
cases because they are less necessary now than they once were (since
motherboards today now tend to keep the circuitry farther away from
the screwholes than they once did).

http://www.pcguide.com/ref/case/partsHardware-c.html




wrote in message
...
Hi All

I'm trying to build my first home-build computer.(Asus A7N8X-E)
And now I have a question about how I do installing my MoBo in the
case.I
have fit those copper things to keep the distants between the case
and the
MoBo.On the MoBo side I have to fit these little ring for the
electrical
insulation (or is this isolation!!!)
Whatever, my question is::do I fit those rings on both sides, or
just on the
top side of the MoBo.

Thx in advance
françois