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Insulation spacers - use or not to use

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My case came with 9 of them, and after some googling (even in the instruction book they don't use them) it seems the majority of people do not use them at all. What are the pros/cons of them?

My mobo has 7 metallic screw holes and 2 that are not if that helps. Also the stand-offs are brass/bronze or something like that. Just want some clarification before I build, don't want to fry anything.

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I don't, and never have. I think I'm right in saying the pads the mounting screws touch upon are ground points so these help the motherboard get a decent earth (via the chassis)

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Depends on the Mobo. I have found that all the modern Mobo's I have worked with, the mounting holes are already issolated. On a side note, if you have any concern, use them. It really adds about 5 mins to your install and will not hurt.

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USE the spacers.

I thought the other guy who had his brand new self put together computer earlier not work because he hadn't used them was unique.

But you HAVE to use the brass spacers. otherwise your motherboard will be to low and will be resting on the backplate. meaning all the nice little solderign points on the bottom will be shorting themselves on ground.

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^ What hawkman said.

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Hehe yes I will of course use the brass stand-offs, but I mean the little pink O-rings that look like washers for the screws :p

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No need for them. They're pobbly just locking rings to avoid screws screwing themselves out anyway.

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These are generally Phenolic washers and they are really a legacy. In the past, they were necessary to insulate (or further insulate) the mounting hardware from the board itself to avoid shorts.

These days, they're unnecessary. I build computers for a living (for use in the medical industry) and these are not used, ever. In fact, most board manufacturers don't even include them anymore.

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