Each PA238Q is pre-calibrated with a maximum ?E (Delta E) of less than 5. Ensures precise reading of colour input and guarantees excellent colour fidelity. PA238Q adopts 178? of horizontal and vertical viewing angle that eradicates colour shift on your screen no matter where and how you look at it. The ASUS-exclusive QuickFit built in the monitor provides real-size document, photo, and grid mode on top of the operating windows on the screen. It can activated via a hotkey on monitor and used as a guide to accurately view and edit photos. Customized hue and saturation control with 6 colour adjustment allows user to adjust six colours (red, green, blue, cyan, magenta and yellow) independently without effecting other colours. PA238Q comes with rich connectivity including DisplayPort, HDMI, DVI, D-sub. It is also equipped with four USB 2.0 ports so that users could easily connect PA238Q to many peripherals, such as USB drives, keyboard, mouse, digital camera, etc. Embedded LED backlight panel helps power saving and environmental protection with no mercury usage. The ergonomically-designed PA238Q Professional Monitor comes with swivel, tilt, pivot, and height adjustments for ideal viewing position.