Pin Signal Pin SignalNumber name Number name1 DMU 1 VCC2 VCC 2 DMD3 DPU 3 DPD4 GND 4 GNDNOTE: USB 2.0 functionality requires a USB 2.0-capable computer.NOTE: The monitor’s USB ports work only when the monitor is on or in thepower save mode. If you turn off the monitor and then turn it on, the attachedperipherals may take a few seconds to resume normal functionality.Plug-and-PlayYou can install the monitor in any Plug-and-Play-compatible computer. Themonitor automatically provides its Extended Display Identification Data (EDID) to thecomputer using Display Data Channel (DDC) protocols so the system can configureitself and optimize the monitor settings. Most monitor installations are automatic;you can select different settings if desired. For more information about changing themonitor settings,see Operating the Monitor.LCD Monitor Quality and Pixel PolicyDuring the LCD Monitor manufacturing process, it is not uncommon for one ormore pixels to become fixed in an unchanging state. These are hard to see anddo not affect the display quality or usability. For more information on Dell MonitorQuality and Pixel Policy, see dell.com/support/monitors.Maintenance GuidelinesCleaning Your MonitorWARNING: Read and follow the safety instructions before cleaning themonitor.WARNING: Before cleaning the monitor, unplug the monitor power cablefrom the electrical outlet.For best practices, follow these instructions while unpacking, cleaning, or handlingyour monitor:• To clean your screen, use a soft, clean cloth lightly dampened with water. Youcan also use special screen-cleaning tissue or solution suitable for the antistaticcoating. To avoid using detergent of any kind as some detergents leave a milkyfilm on the monitor, use a lightly-dampened, warm cloth to clean the monitor.About Your Monitor 17