Does the AOC Q27G3Z monitor support VESA mounting?

Yes, the AOC Q27G3Z monitor supports VESA mounting with a 100 x 100 mm mounting pattern.

What is the refresh rate and response time of the AOC Q27G3Z monitor?

The AOC Q27G3Z monitor has a refresh rate of 240 Hz and a response time of 0.5 ms.

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AOC Q27G3Z 27" 2K QHD (2560 x 1440) 240Hz Gaming Monitor, G-Sync Compatible; HDR; HDMI DisplayPort; 3-Sided Frameless