Dell S2721Q, S2721QS User Manual

Dell S2721Q/S2721QS Monitor

User’s Guide

Model: S2721Q/S2721QS
Regulatory model : S2721Qb

NOTE: A NOTE indicates important information that helps you make
better use of your computer.

CAUTION: A CAUTION indicates potential damage to hardware or loss
of data if instructions are not followed.

WARNING: A WARNING indicates a potential for property damage,
personal injury, or death.

Copyright © 2020 Del l Inc. or its subsidiaries. Al l rights reserved. Dell, EMC, and other trademarks

are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective
owners.

2020 - 12

Rev. A01

Contents

Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 6

About your monitor. . . . . . . . . . . . . . . . . . . . . . . . . . 7

Package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Product features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Identifying parts and controls . . . . . . . . . . . . . . . . . . . . . 10

Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Back view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Bottom view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Resolution specifications. . . . . . . . . . . . . . . . . . . . . . . . . 16

Supported video modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Preset display modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Environmental characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

LCD monitor quality and pixel policy . . . . . . . . . . . . . . . . 24

Ergonomics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Handling and moving your display . . . . . . . . . . . . . . . . . . 26

Maintenance guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Cleaning your monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Setting up the monitor . . . . . . . . . . . . . . . . . . . . . . 28

Connecting the stand - S2721Q . . . . . . . . . . . . . . . . . . . . 28

Connecting the stand - S2721QS . . . . . . . . . . . . . . . . . . . 31

Connecting your monitor . . . . . . . . . . . . . . . . . . . . . . . . . 34

Connecting the HDMI and power cables . . . . . . . . . . . . . . . . . . . . 34

  │  3

Connecting the DisplayPort (DP to DP) cable (optional) and

power cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Organizing your cables. . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Turning on your monitor. . . . . . . . . . . . . . . . . . . . . . . . . . 36

Securing your monitor using Kensington lock (optional). 37

Removing the monitor stand - S2721Q. . . . . . . . . . . . . . . 38

Removing the monitor stand - S2721QS . . . . . . . . . . . . . 39

VESA wall mounting (optional) . . . . . . . . . . . . . . . . . . . . 40

Operating the monitor . . . . . . . . . . . . . . . . . . . . . . . 41

Power on the monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Using the front-panel controls. . . . . . . . . . . . . . . . . . . . . 41

Front-panel button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Using the On-Screen Display (OSD) menu . . . . . . . . . . . 43

Accessing the menu system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

OSD warning message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Setting the maximum resolution . . . . . . . . . . . . . . . . . . . 62

Requirements to view or playback HDR content . . . . . . . 63

Using the tilt, swivel, and vertical extension . . . . . . . . . . 64

Tilt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Swivel (S2721QS only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Vertical extension (S2721QS only) . . . . . . . . . . . . . . . . . . . . . . . . 65

Rotating the display (S2721QS onl y) . . . . . . . . . . . . . . . . 65

Rotate clockwise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Rotate counterclockwise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Adjusting the rotation display settings of your system . . 67

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Sel f-test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Built-in diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Common problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

4  │ 

Product specific problems . . . . . . . . . . . . . . . . . . . . . . . . 73

Speakers Specific Problems . . . . . . . . . . . . . . . . . . . . . . 74

Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

FCC notices (U.S. only) and other regulatory

information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Contact Dell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

EU product database for energy label and product

information sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

  │  5

Safety instructions

CAUTION: Use of controls, adjustments, or procedures other than
those specified in this documentation may result in exposure to shock,
electrical hazards, and/or mechanical hazards.

• Place the monitor on a solid surface and handle it careful ly. The screen is
fragile and can be damaged if dropped or hit sharply.

• Always be sure that your monitor is electrically rated to operate with the AC
power available in your location.

• Keep the monitor in room temperature. Excessive cold or hot conditions can
have an adverse effect on the liquid crystal of the display.

• Do not subject the monitor to severe vibration or high impact conditions. For
example, do not place the monitor inside a car trunk.

• Unplug the monitor when it is going to be left unused for an extended period
of time.

• To avoid electric shock, do not attempt to remove any cover or touch the
inside of the monitor.

6  │  Safety instructions

About your monitor

Package contents

Your monitor ships with the components shown in the table below. If any
component is missing, contact Dell. For more information, see Contact Dell.

NOTE: Some items may be optional and may not ship with your monitor.
Some features may not be available in certain countries.

NOTE: If you are connecting a stand that you purchased from any other
source, follow the set up instructions that were included with the
stand.

Component image Component description

Display

Stand riser:

a. S2721Q

b. S2721QS

Stand base:

721Q

a. S2

b. S2721QS

About your monitor  │  7

VESA™ screw cover
(S2721Q only)

Power cable (varies by
country)

HDMI cable

•Quick Setup Guide

• Safety, Environmental,
and R

egulatory

Information

8  │  About your monitor

Product features

The Dell S2721Q/S2721QS monitor has an active matrix, Thin-Film Transistor
(TFT), Liquid Crystal Display (LCD) and LED backlight. The monitor features
include:

• 68.47 cm (27 in.) viewable area (measured diagonally).
3840 x 2160 (16:9) resolution, plus full-screen support for lower resolutions.

• Supports AMD FreeSync™, with a refresh rate of 60 Hz and a rapid response
time of 4 ms gray to gray in Extreme mode*.

• Color gamut of 99% sRGB.

• Digital connectivity with DisplayPort and HDMI.

• S2721Q: Til t capability.

• S2721QS: Tilt, swivel, pivot, and height adjustment capabilities.

• Dual buil t-in speakers.

• Removable stand and Video Electronics Standards Association (VESA™)
100

mm mounting holes for flexible mounting solutions.

• Plug and play capability if supported by your system.

• On-Screen Display (OSD) adjustments for ease of set-up and screen
optimization.

• Supports Picture by Picture (PBP) and Picture in Picture (PIP) Select mode.

NOTE: When PIP/PBP is activated, AMD FreeSync™ (in AMD Radeon™
software) is disabled.

• Power and OSD buttons lock.

• Security lock slot.

• < 0.3 W in Standby Mode.

• Optimize eye comfort with a flicker-free screen.

WARNING: The possible long-term effects of blue light emission from
the monitor may cause damage to the eyes, including eye fatigue,
digital eye strain, and so on. ComfortView feature is designed to reduce
the amount of blue light emitted from the monitor to optimize eye
comfort.

*The 4 ms gray-to-gray mode is achievable in the Extreme mode to reduce visible
motion blur and increased image responsiveness. However, this may introduce
some slight and noticeable visual artifacts into the image. As every system setup
and every user's needs are different, we recommend that users experiment with
the different modes to find the setting that is right for them.

About your monitor  │  9

Identifying parts and controls

Front view

S2721Q

S2721QS

Label Description Use

1 Function buttons For more information, see Operating

the monitor.

2 Power On/Off button (with

LE

D indicator)

10  │  About your monitor

To turn the monitor on or off.

Back view

S2721Q

S2721QS

Back view with monitor stand

Back view with monitor stand

Label Description Use

1 VESA mounting holes (100 mm

00 mm - behind attached

x 1
VESA Cover)

Wall mount monitor using VESA­compatible wall mount kit (100 mm x
100 mm).

About your monitor  │  11

2 Barcode, serial number, and

Service Tag label

3 Stand release button Releases stand from the monitor.

4 Regulatory label Lists the regulatory approvals.

5 Cable-management slot Use to organize cables by inserting

Refer to this label if you need to
contact Dell for technical support.
The Service Tag is a unique
alphanumeric identifier that enables
Del l service technicians to identify
the hardware components in your
monitor and access warranty
information.

them through the slot.

12  │  About your monitor

Bottom view

S2721Q

S2721QS

Bottom view without monitor stand

Bottom view without monitor stand

Label Description Use

1 Security lock slot Secures the monitor with security lock

security lock not included).

(

2 Power connector Connect the power cable (shipped with your

mo

nitor).

About your monitor  │  13

3 HDMI port (HDMI 1) Connect your computer with the HDMI cable

(shipped with your monitor).

4 HDMI port (HDMI 2) Connect your computer with the HDMI cable

(shipped with your monitor).

5 DisplayPort Connect your computer with the DisplayPort

cable.

6 Line-out port Connect your speakers.

NOTE: This port does not support

headphones.

7 Speakers Provides audio output.

14  │  About your monitor

Monitor specifications

Model S2721Q S2721QS

Screen type Active matrix - TFT LCD

Panel technology IPS

Aspect ratio 16:9

Viewable image

Diagonal

Width (active area)

Height (active area)

Tot a l a re a

Pixel pitch 0.1554 x 0.1554 mm

Pixel per inch (PPI) 163

Viewing angle

Vertica l

Horizontal

Luminance output 350 cd/m² (typical)

Contrast ratio 1300 to 1 (typical)

Faceplate coating Anti-Glare treatment of the front polarizer (Haze 25%,

Backlight White LED edgelight system

Response time 8 ms gray to gray in Normal mode

684.7 mm (27 in.)

596.7 mm (23.49 in.)

335.7 mm (13.21 in.)

200301.8 mm2 (310.47 in.2)

178° (typical)

178° (typical)

3H)

5 ms gray to gray in Fast mode

4 ms gray to gray in Extreme mode*

*The 4 ms gray-to-gray mode is achievable in the
Extreme mode to reduce visible motion blur and
increased image responsiveness. However this may
introduce some slight and noticeable visual artifacts into
the image. As every system setup and every user's needs
are different, we recommend that users experiment with
the different modes to find the setting that is right for
them.

About your monitor  │  15

Color depth 1.07 billion colors

Color gamut sRGB 99% (typical)

Connectivity • 1 x DisplayPort version 1.2

• 2 x HDMI ports version 2.0

• 1 x audio line-out port

Border width (edge of monitor to active area)

To p

Left/Right

Bottom

Adjustability

Ti l t

Swivel

Pivot

Height adjustable
st

and

Built-in speakers 2 x 3 W sound output

Del l Display Manager
comp

atibility

Security Security lock slot (cable lock sold separately)

7.4 m m

7.4 m m/ 7.4 mm

21.6 mm

-5° to 21°

Not applicable

Not applicable

Not applicable

Easy Arrange and other key features

-5° to 21°

-30° to 30°

-90° to 90°

110 mm

Resolution specifications

Model S2721Q/S2721QS

Horizontal scan range 130 kHz to 137 kHz (automatic)

Vertical s can ra nge 40 Hz to 60 Hz (automatic)

Maximum preset resolution 3840 x 2160 at 60 Hz

Supported video modes

Model S2721Q/S2721QS

Video display capabilities (HDMI
& Disp

layPort)

16  │  About your monitor

480p, 480i, 576p, 576i, 720p, 1080i, 1080p,
QHD, UHD

Preset display modes

HDMI display modes

Display mode Horizontal

frequency

(kHz)

720 x 400 31.47 70.08 28.32 -/+

VESA, 640 x 480 31.50 60.00 25.20 -/-

VESA, 640 x 480 37.50 75.00 31.50 -/-

VESA, 800 x 600 37.90 60.30 40.00 +/+

VESA, 800 x 600 46.90 75.00 49.50 +/+

VESA, 1024 x 768 48.40 60.00 65.00 -/-

VESA, 1024 x 768 60.00 75.00 78.80 +/+

VESA, 1152 x 864 67.50 75.00 108.00 +/+

VESA, 1280 x 1024 64.00 60.00 108.00 +/+

VESA, 1280 x 1024 80.00 75.00 135.00 +/+

VESA, 1600 x 900 60.00 60.00 108.00 +/+

VESA, 1600 x 1200 75.00 60.00 162.00 +/-

VESA, 1920 x 1080 67.50 60.00 148.50 +/+

2048 x 1280 78.90 59.90 174.30 +/+

2560 x 1440 88.79 59.95 241.50 +/-

3840 x 2160 135 60 594 +/-

Vertical

frequency

(Hz)

Pixel clock

(MHz)

Sync

polarity

(Horizontal/

Vertical)

About your monitor  │  17

DP display modes

Display mode Horizontal

frequency

(kHz)

720 x 400

VESA, 640 x 480

VESA, 640 x 480

VESA, 800 x 600

VESA, 800 x 600

VESA, 1024 x 768

VESA, 1024 x 768

VESA, 1152 x 864

VESA, 1280 x 1024

VESA, 1280 x 1024

VESA, 1600 x 900

VESA, 1600 x 1200

VESA, 1920 x 1080

2048 x 1280

2560 x 1440

3840 x 2160

60.00 75.00 78.80 +/+

64.00 60.00 108.00 +/+

80.00 75.00 135.00 +/+

60.00 60.00 108.00 +/+

75.00 60.00 162.00 +/-

78.90 59.90 174.30 +/+

88.79 59.95 241.50 +/-

133.313 60 533.25 +/-

Vertical

frequency

(Hz)

31.47 70.08 28.32 -/+

31.50 60.00 25.20 -/-

37.50 75.00 31.50 -/-

37.90 60.30 40.00 +/+

46.90 75.00 49.50 +/+

48.40 60.00 65.00 -/-

67.50 75.00 108.00 +/+

67.50 60.00 148.50 +/+

Pixel clock

(MHz)

Sync

polarity

(Horizontal/

Vertical)

NOTE: This monitor supports AMD FreeSync™.

18  │  About your monitor

Electrical specifications

Model S2721Q/S2721QS

Video input signals HDMI 2.0/DisplayPort 1.2, 600 mV for each differential

l

ine, 100 Ω input impedance per differential pair

AC input vo l tage/
fr

equency/current

100 VAC to 240 VAC / 50 Hz or 60 Hz ± 3 Hz / 1.5 A
(typical)

Inrush current • 120 V: 30 A (Max.) at 0°C (cold start)

• 240 V: 60 A (Max.) at 0°C (cold start)

Power consumption •0.2 W (Off mode)

•0.2 W (Standby Mode)

•28.8 W (On mode)

•52 W (Max.)

• 21.88 W (Pon)

• 68.48 kWh (TEC)

1

As defined in EU 2019/2021 and EU 2019/2013.

2

Max brightness and contrast setting.

3

Pon: Power consumption of On mode as defined in Energy Star 8.0 version.

1

1

1

2

3

3

TEC: Total energy consumption in kWh as defined in Energy Star 8.0 version.

This document is informational only and reflects laboratory performance. Your
product may perform differently, depending on the software, components and
peripherals you ordered and shall have no obligation to update such information.

Accordingly, the customer should not rely upon this information in making
decisions about electrical tolerances or otherwise. No warranty as to accuracy or
completeness is expressed or implied.

NOTE: This monitor is ENERGY STAR certified.

product qualifies for ENERGY STAR in the factory

This
default settings which can be restored by “Factory Reset”
function in the OSD menu. Changing the factory default
settings or enabling other features may increase power
consumption that could exceed the ENERGY STAR specified
limit.

About your monitor  │  19

Physical characteristics

Model S2721Q S2721QS

Signal cable type

NOTE: Dell monitors are designed to work optimal l y with the video cables that

are shipped with your monitor. As Dell does not have control over the different
cable suppliers in the market, the type of material, connector and process used to
manufacture these cables, Dell does not guarantee video performance on cables
that are not shipped with your Dell monitor.

Dimensions (with stand)

Height 453.4 mm (17.85 in.) • Extended:

Width 611.6 mm (24.08 in.) 611.6 mm (24.08 in.)

Depth 186.8 mm (7.35 in.) 174.7 mm (6.88 in.)

Dimensions (without stand)

Height 364.6 mm (14.35 in.) 364.6 mm (14.35 in.)

Width 611.6 mm (24.08 in.) 611.6 mm (24.08 in.)

Depth 55.4 mm (2.18 in.) 55.4 mm (2.18 in.)

Stand dimensions

Height 176.0 mm (6.93 in.) • Extended:

Width 257.2 mm (10.13 in.) 257.0 mm (10.12 in.)

Depth 186.8 mm (7.35 in.) 174.7 mm (6.88 in.)

Weight

Weight with packaging 8.1 kg (17.86 lb) 9.2 kg (20.28 lb)

Weight with stand
assembl y and cables

• Digital: HDMI, 19 pins

• Digital: DisplayPort, 20 pins (cable not supplied)

510.1 mm (20.08 in.)

• Compressed:

400.1 mm (15.75 in.)

403.1 mm (15.87 in.)

• Compressed:

364.8 mm (14.36 in.)

5.6 kg (12.35 lb) 6.4 kg (14.11 lb)

20  │  About your monitor

Weight without stand
as

sembly (For wall mount
or VESA mount
considerations - no
cables)

Weight of stand assembly 0.7 kg (1.54 lb) 1.5 kg (3.31 lb)

Environmental characteristics

Model S2721Q/S2721QS

liant standards

Comp

• ENERGY STAR certified monitor

• RoHS-compliant

• TCO certified displays

• BFR/PVC-reduced monitor (excluding external cables)

• Arsenic-free glass and Mercury-free for the panel only

Te m p e ra t u re

Operating 0°C to 40°C (32°F to 104°F)

Non-operating • Storage: -20°C to 60°C (-4°F to 140°F)

Humidity

Operating 10% to 80% (non-condensing)

Non-operating • Storage: 5% to 90% (non-condensing)

Altitude

Operating 5,000 m (16,404 ft) (maximum)

Non-operating 12,192 m (40,000 ft) (maximum)

Thermal dissipation

4.7 kg (10.36 lb) 4.7 kg (10.36 lb)

• Shipping: -20°C to 60°C (-4°F to 140°F)

• Shipping: 5% to 90% (non-condensing)

• 177.43 BTU/hour (maximum)

•95.54 BTU/hour (typical)

About your monitor  │  21

Pin assignments

DisplayPort connector

Pin

number

1 ML3 (n)

2 GND

3 ML3 (p)

4 ML2 (n)

5 GND

6 ML2 (p)

7 ML1 (n)

8 GND

9 ML1 (p)

10 ML0 (n)

11 GND

12 ML0 (p)

13 GND

14 GND

15 AUX (p)

16 GND

17 AUX (n)

18 Hot Plug Detect

19 Re-PWR

20 +3.3 V DP_PWR

20-pin side of the

connected signal cable

22  │  About your monitor

HDMI connector

Pin

number

1 TMDS DATA 2+

2 TMDS DATA 2 SHIELD

3 TMDS DATA 2-

4 TMDS DATA 1+

5 TMDS DATA 1 SHIELD

6 TMDS DATA 1-

7 TMDS DATA 0+

8 TMDS DATA 0 SHIELD

9 TMDS DATA 0-

10 TMDS CLOCK+

11 TMDS CLOCK SHIELD

12 TMDS CLOCK-

13 CEC

14 Reserved (N.C. on device)

15 DDC CLOCK (SCL)

16 DDC DATA (SDA)

17 DDC/CEC Ground

18 +5 V POWER

19 HOT PLUG DETECT

19-pin side of the

connected signal cable

About your monitor  │  23