Dell ST2420L-ST2421L Product Features And Specifications

Dell Launched its new series monitors ST2420L in August 2010, Dell ST2420L is a 24-inch full HD monitor with LED. In addition, The ST2420L/ST2421L flat panel display has an active matrix, Thin-Film Transistor (TFT), and Liquid Crystal Display (LCD).

The New Dell ST2420L/ST2421L has 60.97cm (24 inches) viewable area display and 1920 x 1080 resolution, plus full-screen support for lower resolutions,it has Tilt adjustment capability and three different video connection options.

The new Dell ST2420L 24" wide screen full HD monitor promises to deliver true cinematic experience giving movies videos a true to life picture quality.The following are the quick image specifications of the new Dell ST2420L 24 Monitor.

Image Aspect Ratio 16:9
Image Brightness 250 cd/m2
Image Contrast Ratio 8000000:1 (dynamic)

Flat Panel Specifications

Model ST2420L/ST2421L
Screen type Active matrix - TFT LCD
Panel type TN
Screen dimensions 60.97cm (24 inches) (24-inch viewable image size)

Preset display area:



531.36 mm (20.92 inches)

298.89 mm (11.77 inches)

Pixel pitch 0.277 mm
Viewing angle 160° (vertical) typical, 170° (horizontal) typical
Luminance output 250 CD/m² (typical)
Contrast Ratio 1,000:1 (typical)
Dynamic Contrast Ratio

ST2420L: 8,000,000 to 1*

ST2421L: 7,000,000 to 1*

Faceplate coating Antiglare with hard-coating 3H
Backlight LED light bar system
Response Time 5 ms typical
Color Depth 16.7 mil colors
Color Gamut 81 %**


Model ST2420L/ST2421L
Horizontal scan range 30 kHz to 83 kHz (automatic)
Vertical scan range 56 Hz to 76 Hz (automatic)
Maximum preset resolution 1920 x 1080 at 60 Hz

Bottom View

Label Description
1 AC power cord connector
2 DVI connector
3 HDMI connector
4 VGA connector
5 Audio Line-in
6 Audio Line out

When it comes to the physical characteristic , the following are the few of them
Connector type
D-sub: Blue connector
DVI-D: White connector

Dimensions (with stand)
Height 418.24 mm (16.47 inches)
Width 574.96 mm (22.64 inches)
Depth 203.68 mm (8.02 inches)

Weight with packaging 5.75 kg (12.68 lb)

Power Management Specifications


Normal operation
30 W (maximum)

20 W (typical)
Active-off mode:
Less than 1 W

Switch off
Less than 0.5 W

Dell ST2420L 24-inch full HD monitor with LED comes with 3-Year Advanced Exchange Service with a dell quoted price of Dell Price $259.99. You can have a look at the detailed specification here from Dell

HP Answers!


  1. This post is great for anyone that needs info on wireless home automation and how it can work for you.

  2. I purchased this monitor with the Dell 8300 i7 system. I find the typical pictures bright and the scenes of Battlefield 3 more than just acceptable. I don't think you can beat the performance and picture quality for the price.