Everytime i see a computer case with a screwed in motherboard. I notice there is a decent amount of gap in between the ground and where the mother board sits. Theoretically, how low can the bottom of your motherboard be to the groud (in mm). Can you safely mount it to the ground?
1 Answers
Most motherboards are attached to their case or sone other metal plate using standoff screws . Similar to the ones below.
The standoffs prevent the electrical components on the bottom of the motherboard from touching the metal of the case. If the metal contacts on the underside of the motherboard touched the case while it was powered on, bit could result in the computer not working at best, or destroy it at worst. A higher voltage rail could pass through a lower voltage circuit and burn out the components.
As far as I know, there is no minimum height. You want enough distance to keep the board from flexing into the case if it wasn't properly supported and heavy components are I stalled on it. Additionally, you do t want it so low an electrical arc could jump from the board to the case.
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