The Qoltec power supply is not compatible with all AOC displays, in particular the AOC 22 (22B2H), due to the size of the connector, which is 6.5 x 4.4 mm, whereas the monitor requires a 5.5 x 2.5 mm connector. To check compatibility with another AOC model, it is essential to compare the specifications of the connector and the voltage required by the monitor with those of the power supply.