Dell S2721DS User Manual

24  │  About your monitor
LCD monitor quality and pixel policy
During the LCD Monitor manufacturing process, it is not uncommon for one or more
pixels to become fixed in an unchanging state which are hard to see and do not
affect the display quality or usability. For more information on Dell Monitor Quality
and Pixel Policy, see
www.dell.com/pixelguidelines.
Ergonomics
CAUTION: Improper or prolonged usage of keyboard may result in
injury.
CAUTION: Viewing the monitor screen for extended periods of time
may result in eye strain.
For comfort and efficiency, observe the following guidelines when setting up and
using your computer workstation:
• Position your computer so that the monitor and keyboard are directly in front
of you as you work. Special shelves are commercially available to help you
correctly position your keyboard.
• To reduce the risk of eye strain and neck/arm/back/shoulder pain from using
the monitor for long periods of time, we suggest you to:
1. Set the distance of the screen between 20 to 28 in. (50 - 70 cm) from your
eyes.
2. Blink frequently to moisten your eyes or wet your eyes with water after
prolonged usage of the monitor.
3. Take regular and frequent breaks for 20 minutes every two hours.
4. Look away from your monitor and gaze at a distant object at 20 feet away
for at least 20 seconds during the breaks.
5. Perform stretches to relieve tension in the neck, arm, back, and shoulders
during the breaks.
• Make sure that the monitor screen is at eye level or slightly lower when you
are sitting in front of the monitor.
• Adjust the tilt of the monitor, its contrast, and brightness settings.
• Adjust the ambient lighting around you (such as overhead lights, desk lamps,
and the curtains or blinds on nearby windows) to minimize reflections and
glare on the monitor screen.
• Use a chair that provides good lower-back support.
• Keep your forearms horizontal with your wrists in a neutral, comfortable
position while using the keyboard or mouse.

Dell S2721DS Specifications

General

Pixel pitch	0.2331 x 0.2331 mm
Screen shape	Flat
Pixel density	108.79 ppi
Backlight type	W-LED
Display diagonal	27 \
Display technology	LCD
Native aspect ratio	16:9
Vertical scan range	48 - 75 Hz
Maximum refresh rate	75 Hz
Response time (fast)	5 ms
Horizontal scan range	30 - 115 kHz
Supported video modes	480i, 480p, 576i, 576p, 720p, 1080i, 1080p
NTSC coverage (typical)	72 %
sRGB coverage (typical)	99 %
Display number of colors	16.78 million colors
Display brightness (typical)	350 cd/m²
Supported graphics resolutions	640 x 480 (VGA), 720 x 400, 800 x 600 (SVGA), 1024 x 768 (XGA), 1152 x 864 (XGA+), 1280 x 1024 (SXGA), 1600 x 900, 1920 x 1080 (HD 1080), 2560 x 1440
RMS rated power	6 W
Number of speakers	2
Product color	Gray
Front bezel color	Black
Heavy metals free	Hg (mercury)
Market positioning	Business
Sustainability certificates	RoHS, ENERGY STAR
HDMI version	1.4
DisplayPort version	1.2
Pivot angle	-90 - 90 °
LED indicators	Power
Tilt angle range	-5 - 21 °
Panel mounting interface	100 x 100 mm
Input current	1.5 A
AC input voltage	100 - 240 V
Power supply type	Internal
AC input frequency	50 - 60 Hz
Energy efficiency scale	A to G
Power consumption (max)	40 W
Annual energy consumption	29 kWh
Power consumption (standby)	0.2 W
Power consumption (typical)	19 W
Operating altitude	0 - 5000 m
Non-operating altitude	0 - 12192 m
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 90 %
Operating relative humidity (H-H)	10 - 80 %
Package depth	819.91 mm
Package width	139.95 mm
Package height	446.79 mm
Package weight	8900 g
Cables included	AC, HDMI
Harmonized System (HS) code	85285210
Ethernet LAN (RJ-45) ports	0

Weight and Dimensions

Bezel width (side)	7.4 mm
Depth (with stand)	174.7 mm
Height (with stand)	510.1 mm
Weight (with stand)	6200 g
Bezel width (bottom)	21.6 mm
Depth (without stand)	55.4 mm
Width (without stand)	611.6 mm
Height (without stand)	364.6 mm
Weight (without stand)	4400 g