Dell ST2420L User Manual

Dell™ ST2420L/ST2421L monitor
User Guide
Important instructions to set the display resolution to 1920x1080 (Maximum)
Information in this document is subject to change without notice.
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ST2420Lb/ST2421Lb
September 2013 Rev. A05

Dell ST2420L Specifications

General

Pixel pitch	0.227 x 0.227 mm
Aspect ratio	16:9
Display diagonal	24 \
Display refresh rates	60Hz
Viewing angle, vertical	160 °
Contrast ratio (dynamic)	8000000:1
Viewing angle, horizontal	170 °
Display brightness (typical)	250 cd/m²
HDCP	Yes
DVI-I ports quantity	0
Weight (imperial)	9.46 lbs
Power requirements	100 - 240V, 50/60Hz + 3Hz
Package weight (imperial)	12.65 lbs
Input current	2 A
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (max)	30 W
Power consumption (off)	0.5 W
Power consumption (standby)	1 W
Power consumption (typical)	20 W
Product color	Black
Market positioning	Business
LED indicators	Stand-by
Cable lock slot type	Kensington
Panel mounting interface	- mm
Package weight	5750 g
Sustainability certificates	ENERGY STAR
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 90 %
Non-operating relative humidity (non-condensing)	10 - 80 %

Weight and Dimensions

Depth (without stand)	203.6 mm
Width (without stand)	574.9 mm
Height (without stand)	418.2 mm
Weight (without stand)	4290 g

Summary

Dell Monitor User Guide

Setting Maximum Display Resolution

Instructions for configuring the monitor's optimal 1920x1080 resolution.

About Your Monitor

Monitor Overview and Important Notices

General information about the monitor, including notes, notices, and cautions.

Package Contents and Product Features

Package Contents Details

Lists all components included in the monitor package.

Product Features

Highlights the key capabilities and technological aspects of the monitor.

Identifying Monitor Components

Front, Back, Side, and Bottom Views

Identifies and describes controls and ports on all monitor views.

Monitor Specifications

Power Management and Connector Pins

Details power saving modes and pin assignments for monitor connectors.

Flat Panel and Resolution Specifications

Flat Panel Specifications

Technical specifications of the monitor's flat panel display technology.

Resolution and Supported Modes

Information on supported display resolutions and video modes.

Electrical and Physical Characteristics

Electrical and Physical Specs

Comprehensive electrical and physical specifications of the monitor.

Environmental and Weight Details

Environmental Conditions

Operating and storage temperature, humidity, and altitude limits.

Weight Specifications

Details the weight of the monitor with and without packaging/stand.

Maintenance and Safety Guidelines

Caring for Your Monitor

Provides instructions for cleaning and maintaining the monitor.

Setting Up Your Monitor

Base Attachment and Monitor Connection

Steps for assembling the stand and connecting the monitor to a PC.

Soundbar Attachment and Stand Removal

Instructions for attaching the optional soundbar and removing the stand.

Operating the Monitor

Front Panel and OSD Menu Usage

Guide to using front panel buttons and the On-Screen Display (OSD) menu.

Setting Maximum Resolution

Instructions for setting the monitor to its maximum display resolution.

Solving Problems

Self-Test and Diagnostics

Procedures for running built-in diagnostics and self-test functions.

Common and Specific Problems

Troubleshooting common and product-specific issues with solutions.

Appendix and Support Information

Safety, Regulatory, and Contact Info

Safety, FCC, regulatory compliance, and Dell contact information.