AOC 27G2U/BK
1920 x 1080 pixels, 27"
AOC 27G2U/BK
1920 x 1080 pixels, 27"
Of course it can, it has a VESA mount 100x100 mm. These are 4 holes (threads) on the back, arranged in a square and with a standardised size, so that you can screw on the wall mount.
The VESA mount is located where the stand is attached to the monitor.
From the base to the top of the screen at the lowest position is 40.0cm.
No, that is not possible. A maximum of 120hz is possible with hdmi. 144hz is only possible via the display port.