8  │  About your monitorProduct featuresThe Dell U2520D/U2520DR monitor has an active matrix, Thin-Film Transistor(TFT), Liquid Crystal Display (LCD) and LED backlight. The monitor featuresinclude:• 63.44 cm (25 in.) viewable area (measured diagonally).2560 x 1440 (16:9) resolution, plus full-screen support for lower resolutions.• Wide viewing angle to allow viewing from a sitting or standing position.• Color gamut of 99% sRGB with an average Delta E < 2.• Digital connectivity with DisplayPort, USB Type-C and HDMI.• Single USB Type-C to supply power (PD 90 W) to a compatible notebookwhile receiving video & data signal.• Tilt, swivel, height, and rotate adjustment capabilities.• Ultra-thin bezel minimizes the bezel gap in multi-monitor usage, enablingeasier setup with an elegant viewing experience.• Removable stand and Video Electronics Standards Association (VESA™)100 mm mounting holes for flexible mounting solutions.• Equipped with 1 USB Type-C upstream port, 1 USB Type-C downstream port,and 3 USB Type-A downstream ports.• Plug and play capability if supported by your system.• On-Screen Display (OSD) adjustments for ease of set-up and screenoptimization.• Power and OSD buttons lock.• Security lock slot.• Stand lock.• 0.3 W standby power when in sleep mode.• DisplayHDR 400.• Optimize eye comfort with a flicker-free screen.WARNING: The possible long-term effects of blue light emission fromthe monitor may cause damage to the eyes, including eye fatigue,digital eye strain, and so on. ComfortView feature is designed to reducethe amount of blue light emitted from the monitor to optimize eyecomfort.

About your monitor

Product features

Identifying parts and controls

Back view

Side view

Bottom view

Monitor specifications

Resolution specifications

Multi-Stream Transport (MST) modes

Physical characteristics

Environmental characteristics

Power management modes

Pin assignments

Plug and play capability

USB 3.0 downstream connector

USB ports

Setting up the monitor

Connecting your monitor

Connecting the HDMI cable (for U2520DR)

Connecting the USB Type-C cable

function

Organizing your cables

VESA wall mounting (optional)

Operating the monitor

Front-panel button

Using the On-Screen Display (OSD) menu

OSD warning message

Setting the maximum resolution

Requirements to view or playback HDR content

Using the tilt, swivel, and vertical extension

Vertical extension

Rotate clockwise

Adjusting the rotation display settings of your system

Troubleshooting

Built-in diagnostics

Always On USB Type-C Charging

Product specific problems

Universal Serial Bus (USB) specific problems

Appendix

Dell UltraSharp 25 Series User Manual

UltraSharp 25 Series

UltraSharp 25 U2520D

UltraSharp 25 U2520DR