Pretty sure that's VESA 100. Back looks almost identical to the LG 34GK950G which went on my monitor arm no problem.
What's your monitor arm? Need inspiration.
Ergotron MX
Slightly less spendy than the above options, but I did need three of em.
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Pretty sure that's VESA 100. Back looks almost identical to the LG 34GK950G which went on my monitor arm no problem.