AOC I2490PXQU, I2790PQU, Q2790PQU
We go over the three AOC monitors together, because they are a lot like each other in terms of aesthetics. Of course, the two 27-inch models are slightly wider but at first glance the I2790PQU and the Q2790PQU are indistinguishable. All models have elegant thin bezels, with only a slightly ticker bezel at the bottom. In it you can find the controlling electronics, operating the on-screen menu is done using a joystick at the back. There is a white led on the right that lets you know when the monitor is active, but fortunately it is not too bright.
The base and edge are covered in metal coloured plastic - on the pictures it might look like aluminium, but it is not. Up close it is clear by simply looking at it, but we certainly do not think it looks bad. The round base - which is internally solidified with metal - has a circle pattern, which might make you think of the design that Asus uses for their more luxurious notebooks and smartphones. There is also an opening that enables cable management.
The three look nearly identical from behind as well. Characteristic for all three is the usb 3.0 hub that is present on one side, with a single upstream and four downstream-connectors, one of which can be used for quick charging a smartphone for example. These connectors point directly backwards, the other ones are vertically pointed down, which is pretty useful.
Those connectors are mostly identical: we find displayport 1.2, hdmi and even vga for offices that are a bit slower when it comes to the flow of time. The only difference between the three is that the Q2790PQU has two hdmi-inputs instead of one, which means that this model has a total of four inputs. Furthermore we find audio in- and outputs as well as built-in speakers.
As stated before these three models in the 90-series are on a height-adjustable, ergonomic base. The monitor can swivel, turn and rotate to portrait view. The latter is not only useful if you mostly use the monitor in vertical mode- it also simplifies connecting the cables. The on-screen menu can be operated using the joystick on the back. This is more pleasant than having to use buttons at the bottom of the monitor, but the menu does not always respond to your input which means there is still room for improvement here.
Worth mentioning in the area of functionality is the fact that the used panels are of the dc-type, otherwise known as direct current: the brightness is controlled via the voltage and not via pwm, which means you will not see a 'flicker-effect'. The monitors also have a 'low blue light' mode, which is a lot better with AOC (as with sister brand Philips) when compared to many competitors: the image looks more natural, because a smaller part of the blue light is filtered out. Furthermore the monitors have a timer that allows you to set the time after which the power is turned off as well as an Eco-mode for a lower power consumption for certain applications.