[SOLVED] Why did trimming PCB kill ram?

[tony95i]

I trimmed the edge of a stick DDR4 to resolve a clearance issue and the stick seems to be dead. The only thing on the edge was a single gold dot, I didn't think it was important but guess I was wrong. What is the gold dot and what does it do? See far left of image below.

 

[Karadjgne]

There are several different thickness 240mm rads, most run @ 25-28mm which would probably clear that ram slot, but some are thicker and can run 30-34mm. Which can make a difference when you add 26mm for a fan.

 

[tony95i]

There are several different thickness 240mm rads, most run @ 25-28mm which would probably clear that ram slot, but some are thicker and can run 30-34mm. Which can make a difference when you add 26mm for a fan.

My rad says it's 27mm, I wasn't interested in going smaller, nor was I interested in returning and waiting on a new one that probably cost more not to mention return fees.