Dell S2421HS, S2721HS, S2421HSX, S2721HSX User Manual

Dell S2421HS/S2721HS/S2421HSX/

S2721HSX Monitor

User’s Guide

Monitor Model: S2421HS/S2721HS/S2421HSX/S2721HSX

Regulatory Model: S2421Ht/S2721Ht

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

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 Dell Inc. or its subsidiaries. All 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 – 11     

Rev. A01

Contents

Safety instructions . . . . . . . . . . . . . 5

About your monitor . . . . . . . . . . .	.	.	6
Package contents . . . . . . . . . . . .	. .		. 6
Product features			7
Identifying parts and controls			8
Front view . . . . . . . . . . . . . . . . . .	. .		.8
Back view . . . . . . . . . . . . . . . . . .	. .		.9
Bottom view . . . . . . . . . . . . . . . . .	. .		. 10
Monitor specifications			11
Resolution specifications . . . . . . . . . . . .	. .	.	12
Preset display modes . . . . . . . . . . . . . .	. .		12
Electrical specifications			13
Physical characteristics			14
Environmental characteristics . . . . . . . . . .	. .	.	15
Pin assignments			16
Plug-and-play . . . . . . . . . . . . . .	.	. 18
LCD monitor quality and pixel policy . . . . . .	.	. 18
Ergonomics			19
Handling and moving your display			21
Maintenance guidelines . . . . . . . . . .	. .		22
Cleaning your monitor			22

Setting up the monitor . . . . . . . . . . . 23

Connecting the stand . . . . . . . . . . . . . 23 Using the tilt, swivel, and vertical extension . . . . . 25

Contents

|        3

Tilt, Swivel, and Vertical Extension	25
Rotating the display . . . . . . . . . . . . .	26
Configuring the display settings on your computer after
rotation	26
Connecting your monitor . . . . . . . . . . .	. 27
Organizing your cables	28
Securing your monitor using Kensington lock (optional)	28
Removing the monitor stand . . . . . . . . . .	29
Wall mounting (optional) . . . . . . . . . . .	30

Operating the monitor . . . . . . . . . . . . 31

Power on the monitor . . . . . . . . . . . .	.	31
Using the front panel controls		31
Using the OSD lock function . . . . . . . . . .		33
Front panel button		35
Using the On-Screen Display (OSD) menu . . . . .		36
Accessing the menu system . . . . . . . . . . . . .		36
OSD warning messages		47
Setting the maximum resolution . . . . . . . . . . .	.	50

Troubleshooting . . . . . . . . . . . . . . 51

Self-test . . . . . . . . . . . . . . . . .	. 51
Built-in diagnostics . . . . . . . . . . . . .	52
Common problems	53
Product specific problems	55

Appendix . . . . . . . . . . . . . . . . 56

FCC notices (U.S. only) and other regulatory information 56

Contacting Dell	56
EU product database for energy label and product
information sheet . . . . . . . . . . . .	. . 56

4      |

Contents

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 carefully. 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.

For information on safety instructions, see the Safety, Environmental, and Regulatory Information (SERI).

Safety instructions

|        5

About your monitor

Package contents

Your monitor ships with the components shown below. Ensure that you have received all the components and see Contacting Dell if anything is missing.

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

		Display
S2421HS/S2721HS	S2421HSX/S2721HSX	Stand riser
S2421HS/S2721HS	S2421HSX/S2721HSX	Stand base
		Power cable (varies by country)
		HDMI cable

6        |

About your monitor

• Quick Start Guide

• Safety, Environmental, and

Regulatory Information

Product features

The Dell S2421HS/S2721HS/S2421HSX/S2721HSX monitor has an active matrix, Thin Film Transistor (TFT), Liquid Crystal Display (LCD), and LED backlight. The monitor features include:

•S2421HS/S2421HSX: 60.45 cm (23.80 in.) active area display (measured diagonally). 1920 x 1080 (16:9) resolution, plus full-screen support for lower resolutions.

•S2721HS/S2721HSX: 68.6 cm (27 in.) active area display (measured diagonally). 1920 x 1080 (16:9) resolution, plus full-screen support for lower resolutions.

•Tilt, swivel, pivot and vertical extension adjustment capabilities.

•Removable pedestal and Video Electronics Standards Association (VESA™) 100 mm mounting holes for flexible mounting solutions.

•Ultra-thin bezel minimizes the bezel gap in multi-monitor usage, enabling easier set up with an elegant viewing experience.

•Extensive digital connectivity with HDMI and DP helps future-proof your monitor.

•Plug and play capability if supported by your computer.

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

•Supports AMD FreeSync™ technology. AMD Freesync™ certified range from 48 Hz - 75 Hz.

•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 or digital eye strain. ComfortView feature is designed to reduce the amount of blue light emitted from the monitor to optimize eye comfort.

About your monitor

|        7

Identifying parts and controls

Front view

1 2

S2421HS/S2721HS

		1		2
		S2421HSX/S2721HSX
Label	Description		Use
1	Function buttons		For more information, see Operating the Monitor.
2	Power on/off button		To turn the monitor on or off.
	(with LED indicator)

8        |

About your monitor

Back view

1

2

3

5

4

S2421HS/S2721HS

1

2

3

					5
	4
		S2421HSX/S2721HSX
Label	Description		Use
1	VESA mounting holes (100 mm		Wall mount monitor using VESA-compatible
	x 100 mm-behind attached		wall mount kit (100 mm x 100 mm).
	VESA cover)
2	Regulatory label		Lists the regulatory approvals.
3	Stand release button		Releases stand from monitor.
4	Barcode, serial number, and		Refer to this label if you need to contact
	Service Tag label		Dell for technical support. The Service Tag
			is a unique alphanumeric identifier that
			enables Dell service technicians to identify
			the hardware components in your display
			and access warranty information.
5	Cable management slot		Use to organize cables by placing them
			through the slot.

About your monitor

|        9

Bottom view

1

2

3 4 5

S2421HS/S2721HS

	1		2		3 4 5
	S2421HSX/S2721HSX
Label	Description				Use
1	Security lock slot				Secures monitor with security cable lock (sold
					separately).
2	Power connector				Connect the power cable (shipped with your
					monitor).
3	DisplayPort				Connect your computer with the DisplayPort
					cable (optional).
4	HDMI port				Connect your computer with the HDMI cable
					(shipped with your monitor).
5	Audio line-out port				Connect speakers to playback audio through
					HDMI or DisplayPort audio channels.
					Only two-channel audio is supported.
					NOTE: The audio line-out port does not support
					headphones.

10        |

About your monitor

Monitor specifications

Model	S2421HS/S2421HSX		S2721HS/S2721HSX
Screen type	Active matrix - TFT LCD
Panel type	In-plane switching technology
Aspect ratio	16:9
Viewable image dimensions:
Diagonal	60.45 cm (23.8 in.)		68.6 cm (27.0 in.)
Active Area:
Horizontal	527.04 mm	(20.75 in.)	597.89 mm	(23.54 in.)
Vertical	296.46 mm	(11.67 in.)	336.31 mm	(13.24 in.)
Area	156246.28 mm2 (242.15 in.2)		201073.02 mm2 (311.67 in.2)
Pixel pitch	0.2745 mm x 0.2745 mm		0.3114 mm x 0.3114 mm
Pixel per inch (PPI)	92.56		81.59
Viewing angle:
Horizontal	178° (typical)
Vertical	178° (typical)
Brightness	250 cd/m² (typical)		300 cd/m² (typical)
Contrast ratio	1,000 to 1 (typical)
Display screen coating	Anti-glare treatment of the front polarizer (3H) hard
	coating
Backlight	LED edgelight system
Response Time	8 ms (normal)
(Gray to Gray)	5 ms (fast)
	4 ms (extreme)
Color depth	16.7 million colors
Color gamut*	NTSC 72%
Connectivity	• 1 x HDMI 1.4
	• 1 x DisplayPort 1.2
	• 1 x Audio line-out port (3.5 mm jack)
Border width (edge of monitor to active area)
Top/Left/Right	5.4 mm		6.0 mm
Bottom	20.7 mm		21.3 mm
Adjustability

About your monitor

|        11

Height adjustable stand	100 mm	110mm
Tilt	-5° to 21°
Swivel	-30° to 30°
Pivot	-90° to 90°
Cable management	Yes
Dell Display Manager	Easy Arrange and other key features
(DDM)Compatibility
Security	Security-lock slot (cable lock sold separately)

*At panel native resolution only, under Custom Mode preset.

Resolution specifications

Model		S2421HS/S2421HSX/S2721HS/S2721HSX
		DisplayPort			HDMI
Horizontal scan range		83 kHz to 83 kHz			30 kHz to 83 kHz
Vertical scan range		48 Hz to 75 Hz
Maximum preset resolution		1920 x 1080 at 60 Hz
Video display capabilities		480i, 480p, 576i, 576p, 720p, 1080i, 1080p
(HDMI and DP alternate
mode)
Preset display modes
Display mode	Horizontal		Vertical	Pixel clock			Sync
	frequency		frequency	(MHz)			polarity
	(kHz)		(Hz)				(Horizontal/
							Vertical)
VGA, 720 x 400	31.5		70.0	28.3			-/+
VGA, 640 x 480	31.5		60.0	25.2			-/-
VESA, 640 x 480	37.5		75.0	31.5			-/-
VESA, 800 x 600	37.9		60.0	40.0			+/+
VESA, 800 x 600	46.9		75.0	49.5			+/+
VESA, 1024 x 768	48.4		60.0	65.0			-/-
VESA, 1024 x 768	60.0		75.0	78.8			+/+
MAC, 1152 x 864	67.5		75.0	108.0			+/+
VESA, 1280 x 1024	64.0		60.0	108.0			+/+
VESA, 1280 x 1024	80.0		75.0	135.0			+/+

12        |

About your monitor

VESA, 1600 x 900	60.0	60.0	108.0	+/+
CVT, 1920 x 1080	67.5	60.0	148.5	+/+
CVT, 1920 x 1080	83.89	75.0	174.5	+/-

Electrical specifications

Model	S2421HS/S2421HSX/S2721HS/S2721HSX
Video input signals	• Digital video signal for each differential line
	Per differential line at 100 ohm impedance
	• DP/HDMI signal input support
Input voltage/frequency/	100-240 VAC/50 or 60 Hz ± 3 Hz/1.5 A (maximum)
current
Inrush current	120 V: 30 A (maximum)
	240 V: 60 A (maximum)
Power consumption
S2421HS/S2421HSX	S2721HS/S2721HSX
0.2 W (Off Mode)1	0.2 W (Off Mode)1
0.2 W (Standby Mode)1	0.2 W (Standby Mode)1
11.6 W (On Mode)1	15.7 W (On Mode)1
23 W (Max)2	31 W (Max)2
11.04 W (Pon)3	12.59 W (P )3
	on
35.04 kWh (TEC)3	40.14 kWh (TEC)3

1As defined in EU 2019/2021 and EU 2019/2013.

2Max brightness and contrast setting.

3Pon: Power consumption of On Mode as defined in Energy Star 8.0 version.

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.

About your monitor

|        13

This product qualifies for ENERGY STAR in the factory 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.

Physical characteristics

Model	S2421HS/S2421HSX	S2721HS/S2721HSX
Connector type	• 1 x HDMI1.4 port
	• 1 x DisplayPort 1.2
	• 1 x Audio line-out port
Signal cable type	1.8 m HDMI1.4 cable
Dimensions (with stand):
Height (extended)	446.8 mm (17.59 in.)	509.0 mm (20.04 in.)
Height (compressed)	346.8 mm (13.65 in.)	399.0 mm (15.71 in.)
Width	537.8 mm (21.17 in.)	609.9 mm (24.01 in.)
Depth	159.7 mm (6.29 in.)	174.7 mm (6.88 in.)
Dimensions (without stand):
Height	322.6 mm (12.70 in.)	363.6 mm (14.32 in.)
Width	537.8 mm (21.17 in.)	609.9 mm (24.01 in.)
Depth	53.8 mm (2.12 in.)	54.0 mm (2.13 in.)
Stand dimensions:
Height (extended)	361.5 mm (14.23 in.)	403.1 mm (15.87 in.)
Height (compressed)	325.4 mm (12.81 in.)	364.8 mm (14.36 in.)
Width	237.0 mm (9.33 in.)	257.0 mm (10.12 in.)
Depth	159.7 mm (6.29 in.)	174.7 mm (6.88 in.)
Weight:
Weight with packaging	7.0 kg (15.43 lb)	8.9 kg (19.62 lb)
Weight with stand assembly	4.8 kg (10.58 lb)	6.0 kg (13.23 lb)
and cables
Weight without stand	3.2 kg (7.05 lb)	4.3 kg (9.48 lb)
assembly (For wall mount or
VESA mount considerations -
no cables)

14        |

About your monitor

Weight of stand assembly	1.3 kg (2.87 lb)	1.5 kg (3.31 lb)
Environmental characteristics
Compliant standards
• ENERGY STAR certified Monitor
• TCO Certified Display
• RoHS Compliant
• BFR/PVC Reduce monitor (excluding external cables)
• Arsenic-Free glass and Mercury-Free for the panel only
Temperature:
Operating	0°C to 40°C (32°F to 104°F)
Non-operating	-20 °C to 60 °C (-4 °F to 140 °F)
Humidity:
Operating	10% to 80% (non-condensing)
Non-operating	5% to 90% (non-condensing)
Altitude:
Operating (maximum)	5,000 m (16,404 ft)
Non-operating (maximum)	12,192 m (40,000 ft)
Thermal dissipation
S2421HS/S2421HSX	78.48 BTU/hour (maximum)
	39.58 BTU/hour (On Mode)
S2721HS/S2721HSX	105.78 BTU/hour (maximum)
	53.57 BTU/hour (On Mode)

About your monitor

|        15

Pin assignments

DisplayPort

Pin	20-pin side of	Pin	20-pin side of
number	the connected signal cable	number	the connected signal cable
1	ML3 (n)	11	GND
2	GND	12	ML0 (p)
3	ML3 (p)	13	CONFIG1
4	ML2 (n)	14	CONFIG2
5	GND	15	AUX CH (p)
6	ML2 (p)	16	GND
7	ML1 (n)	17	AUX CH (n)
8	GND	18	Hot Plug Detect
9	ML1 (p)	19	Return
10	ML0 (n)	20	DP_PWR

16        |

About your monitor

HDMI port

Pin number	19-pin side of the connected signal cable
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

About your monitor

|        17