Dell U2421HE User Manual

Dell UltraSharp 24/27
USB-C Hub Monitor - U2421HE/U2721DE
User’s Guide
Model: U2421HE/U2721DE Regulatory model: U2421HEt/U2721DEt
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 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 – 03
Rev. A00
Contents
About Your Monitor .................................5
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Product Features
Identifying Parts and Controls
Monitor Specifications
Plug-and-Play
LCD Monitor Quality and Pixel Policy
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . . . . . . . . . 7
. . . . . . . . . . . . . . . . . . . . . . . . . . . .10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
. . . . . . . . . . . . . . . . . . . .24
Setting Up the Monitor .............................25
Attaching the Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Using the Tilt, Swivel, and Vertical Extension
Adjusting the Rotation Display Settings of Your System
Connecting Your Monitor
Organizing Your Cables
Removing the Monitor Stand
Wall Mounting (Optional)
. . . . . . . . . . . . . . . . . . . . . . . . . . .29
. . . . . . . . . . . . . . . . . . . . . . . . . . .32
. . . . . . . . . . . . . . . . . . . . . . . .32
. . . . . . . . . . . . . . . . . . . . . . . . . .33
. . . . . . . . . . . . . . . .27
. . . . . . . . . .28
Operating the Monitor ..............................34
Turning on the Monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Using the Front Panel Controls
Using the OSD Lock function
Using the On-Screen Display (OSD) Menu
. . . . . . . . . . . . . . . . . . . . . . .34
. . . . . . . . . . . . . . . . . . . . . . . .36
. . . . . . . . . . . . . . . . .39
Contents | 3
Troubleshooting ...................................54
Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Built-in Diagnostics
Common Problems
Product Specific Problems
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
. . . . . . . . . . . . . . . . . . . . . . . . . .57
Appendix.........................................59
Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
FCC Notices (U.S. only) and Other Regulatory Information
Contacting Dell
Setting Up Your Monitor
Maintenance Guidelines
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
. . . . . . . . . . . . . . . . . . . . . . . . . . .60
. . . . . . . . . . . . . . . . . . . . . . . . . . .62
. . . . . . . .59
4 | Contents

About Your Monitor

Package Contents

Your monitor ships with the components shown below. Make sure that you have received all the components and contact Dell if something is missing.
NOTE: Some items may be optional and may not ship with your monitor.
Somefeatures or media may not be available in certain countries.
Display
Stand riser
Stand base
Power cable (varies by country)
USB Type-C cable (C to C)
About Your Monitor | 5
DP cable
U2421HE Color Calibration Factory Report
Every Dell U2421HE is shipped incorporating pre-tuned
Serial No.
CN00WG2J7444572B046L standard mode(sRGB) with average Delta-E 2. This helps prevent significant color inconsistency or
Tester
2008L0415 inaccuracy when content is displayed onscreen. In addition, a tighter grey-scale tracking on each U2421HE helps enable ultra-smooth color gradation. The factory measurements from this very unit are shown here.
Test
CA-210/CA-310
CA-2000S
Equipment
Be assured of Accurate, Precise and Consistent
Chroma 2326/2235/2233
Onscreen Color with eve
ltraSharp U2421HE.
ry Dell U
Standard mode (sRGB) Avg. Delta E 2
Gray-Scale Tracking
Gamma
Note: Calibrations were done according to Dell approved test procedures using calibrated equipment at the factory production line. This Report is provided only with and for this new Dell U2421HE UltraSharp monitor. Results may vary with other test equipment, setups and test patterns. Please retain this Report for your reference as Dell is unable to reproduce it or provid e a duplic ate.
•Quick Setup Guide
•Safety,Environmental,and
Regulatory Information
•Factory Calibration Report

Product Features

The Dell UltraSharp U2421HE/U2721DE monitor has an active matrix, thinfilm transistor (TFT), liquid crystal display (LCD), and LED backlight. The monitor features include:
• U2421HE: 60.47 cm (23.8 in.) active area display (Measured diagonally) 1920 x 1080 (16:9) resolution, plus full-screen support for lower resolutions.
• U2721DE: 68.47 cm (27 in.) active area display (Measured diagonally) 2560 x 1440 (16:9) resolution, plus full-screen support for lower resolutions.
• Wide viewing angles with 99% sRGB color with an average Delta E<2.
• 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 DP helps future-proof your monitor.
• Single USB Type-C to supply power to compatible notebook while receiving video
signal.
• USB-C and RJ45 ports enable a single-cable, network-connected experience.
• Plug and play capability if supported by your system.
• On-Screen Display (OSD) adjustments for ease of set-up and screen optimization.
• Power and OSD buttons lock.
• Security lock slot.
• 0.3 W standby power when in the sleep mode.
• Optimize eye comfort with a flicker-free screen.
NOTE: 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.
6 | About Your Monitor

Identifying Parts and Controls

Front view
1 2
Label Description 1 Function buttons (For more information, see Operating the Monitor) 2 Power on/off button (with LED indicator)
About Your Monitor | 7
Back View
1
2
3 4
DELL U2421HE
Flat Panel Monitor / Monitor Plano Panel / Moniteur à écra n plat / 液晶 顯示器 Model No. / N° de Modelo / Numéro de modèle /型號:
U2421HEt
Input Rating / Entrada / Daya Tegangan / Tension d’entrée: 100-240V ~ 50/60Hz 1 .6 A 輸入電源:交流電壓 100-240伏特, 1.5 安培, 50/60赫茲
Made in China / Fabricado en China / Fabriqués en Chine / Сделано в Китае / 製造地:中國
Consumo de energía en operación XX.X Wh
2
Удельная мощность рабочего режима - X,XXX Вт/см Потребляемая мощность изделием в режиме ожидания -X,XX Вт Потребляемая мощность изделием в выключенном режиме - X,XX Вт
Apparatet må tilkoples jordet stikkontakt. Apparaten skall anslutas till jordat uttag. Apparatets stikprop skal tilsluttes en stikkontakt med jord, som giver forbindelse til stikproppens jord. Laite on liitettävä suojakoskettimilla varustettuun pistorasiaan.
신청인:Wistron Corporation (For Korea) Wistron InfoComm (Zhongshan) Corporation Linhai Branch 제조자: Wistron InfoComm (Zhongshan) Corporation Linhai Branch
A/S 연락처:080-854-0066 제조국: 중국
XXXXXXXX-XXXXX
R-REM-WT1-U2421HEt
警語:使用過度恐傷害視力
CAN ICES-3 (B)/NMB-3(B)
This equipment complies with part 15 of the FCC Rules.
И005-18
Operation is subject to the following two conditions: (1) This equipment may not cause harmful interference, and (2) this equipment must accept any interference received, including interference that may cause undesired operation.
XXXXXX-XX
ID XXXXXXXXXX
ID XXXXXXXXXX
U2421HE
January 2020
Address for EU Only: Raheen Business Park Limerick Ireland
www.dell.com/regulatory_compliance
XXXXX
U2421HE
5
Label Description Use
1 VESA mounting holes (100 mm x 100
mm-behind attached VESA cover)
Wall mount monitor using VESA­compatible wall mount kit (100 mm x 100 mm).
2 Regulatory label Lists the regulatory approvals.
3 Stand release button Release stand from monitor.
4 Security lock slot Secures monitor with security cable lock
(sold separately).
5 Barcode, serial number, and Service
Tag label
Refer to this label if you need to contact Dell for technical support.
6 Cable management slot Use to organize cables by placing them
through the slot.
Side View
6
8 | About Your Monitor
USB downstream port
Port with battery icon supports BC 1.2.
Bottom View
1 2 3 4 5 61078 9
Label Description Use
1 AC power port To connect the monitor power cable.
2 HDMI port Connect your computer with HDMI cable (optional).
3 DP port (in) Connect your computer with DP cable.
4 USB Type-C/DisplayPort Connect to your computer using the USB Type-C
5 DP port (out)
6&8 USB downstream ports(2) Connect your USB device. You can use these ports
7 Audio line-out port Connect speakers to playback audio coming through
9 RJ-45 connector Remote Network Management and control of display
10 Stand lock Lock the stand to the monitor using a M3 x 6 mm
cable. The USB 3.1 Type-C port offer the fastest transfer rate and the alternate mode with DP 1.4 support the maximum resolution of 1920 x 1080 at 60 Hz(U2421HE) and 2560 x 1440 at 60 Hz(U2721DE), PD 20 V/3.25 A, 15 V/3 A, 9 V/3 A, 5 V/3 A. NOTE: USB Type-C is not supported on Windows versions that are prior to Windows 10.
DP output for MST (multi-stream transport) capable monitor. To enable MST, refer to instruction on section “Connecting the Monitor for DP MST
Function”.
NOTE: Remove the rubber plug when using DP out connector.
only after you have connected the USB cable (Type-C to Type-C) from the computer to the monitor. Port with
Rev. 1.2.
USB Type-C or DP audio channels. Only supports 2-channel audio. NOTE: The audio line-out port does not support headphones.
via RJ-45.
(U2721DE)/ M3 x 8 mm (U2421HE) screw (screw not included).
battery icon supports Battery Charging
About Your Monitor | 9

Monitor Specifications

Model U2421HE U2721DE
Screen type Active matrix - TFT LCD Active matrix - TFT LCD
Panel Type In-plane switching Technology In-plane switching Technology
Aspect ratio 16:9 16:9
Viewable image dimensions
Diagonal 60.47 cm (23.8 in.) 68.47 cm (27 in.)
Active Area
Horizontal 527.0 4 mm (20.75 in.) 596.74 mm (23.49 in.)
Vertical 296.46 mm (11.67 in.) 335.66 mm (13.21 in.)
Area 156246.3 mm
Pixel pitch 0.2745 mm x 0.2745 mm 0.233 mm x 0.233 mm
Pixel per inch (PPI) 92.5 109
Viewing angle Horizontal 178° (typical) 178° (typical) Vertical 178° (typical) 178° (typical) Brightness 250 cd/m² (typical) 350 cd/m² (typical)
Contrast ratio 1000 to 1 (typical) 1000 to 1 (typical)
Display screen coating Anti-glare treatment of the front
Backlight LED LED
Response Time (Gray to Gray)
Color depth 16.7 million colors 16.7 million colors
Color gamut* 99% sRGB
Calibration accuracy Delta E < 2 (average) Delta E < 2 (average)
polarizer (3H) hard coating
5 ms (FAST mode) 8 ms (NORMAL mode)
99% REC709 85% DCI-P3
2
(242.15 in.2) 200301.7 mm2 (310.30 in.2)
Anti-glare treatment of the front polarizer (3H) hard coating
5 ms (FAST mode) 8 ms (NORMAL mode)
99% sRGB 99% REC709 85% DCI-P3
10 | About Your Monitor
Connectivity •1 x DP 1.4 (HDCP 1.4)
•1 x HDMI1.4 (HDCP 1.4)
•1 x USB Type-C (Alternate
mode with DisplayPort 1.4, USB 3.1 upstream port, Power Delivery PD up to 65 W)
•1 x DP (Out) with MST (HDCP
1.4)
•2 x USB 3.0 downstream port
•2 x USB 3.0 with BC1.2
charging capability at 2A (max)
•1 x Analog 2.0 audio line out (3.5 mm jack)
•1 x RJ45
Border width (edge of monitor to active area)
Adjustability
Height adjustable stand
Tilt -5° to 21° -5° to 21°
Swivel -40° to 40° -40° to 40°
Cable management Yes Yes
Dell Display Manager (DDM)Compatibility
Security Security lock slot (cable lock
* At panel native only, under Custom Mode preset.
5.0 mm (Top)
5.1 mm (Left/Right)
8.0 mm (Bottom)
130 mm 130 mm
Easy Arrange and other key features
sold separately) Anti-theft stand lock slot (to panel)
•1 x DP 1.4 (HDCP 1.4)
•1 x HDMI1.4 (HDCP 1.4)
•1 x USB Type-C (Alternate
mode with DisplayPort 1.4, USB 3.1 upstream port, Power Delivery PD up to 65 W)
•1 x DP (Out) with MST (HDCP
1.4)
•2 x USB 3.0 downstream port
•2 x USB 3.0 with BC1.2
charging capability at 2A (max)
•1 x Analog 2.0 audio line out (3.5 mm jack)
•1 x RJ45
6.90 mm (Top)
6.90 mm (Left/Right)
8.1 mm (Bottom)
Easy Arrange and other key features
Security lock slot (cable lock sold separately) Anti-theft stand lock slot (to panel)
Resolution Specifications
Model U2421HE U2721DE
Horizontal scan range 30 kHz to 83 kHz 30 kHz to 90 kHz
Vertical scan range 56 Hz to 76 Hz 56 Hz to 76 Hz
Maximum preset resolution 1920 x 1080 at 60 Hz 2560 x 1440 at 60 Hz
Video display capabilities (DP & USB Type-C playback)
480i, 480p, 576i, 576p, 720p, 1080i, 1080p
About Your Monitor | 11
480i, 480p, 576i, 576p, 720p, 1080i, 1080p
Preset Display Modes
(kHz)
(Hz)
Vertical)
(kHz)
(Hz)
Vertical)
U2421HE
Display Mode Horizontal
Frequency
720 x 400 31.5 70.0 28.3 -/+
VESA, 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 60.3 40.0 +/+
VESA, 800 x 600 46.9 75.0 49.5 +/+
VESA, 1024 x 768 4 8.4 60.0 65.0 -/-
VESA, 1024 x 768 60.0 75.0 78.8 +/+
VESA, 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 +/+
VESA, 1600 x 900 60.0 60.0 108.0 -/+
VESA, 1920 x 1080 6 7. 5 60.0 148.5 +/+
Vertical Frequency
Pixel Clock (MHz)
U2721DE
Display Mode Horizontal
Frequency
720 x 400 31.5 70.0 28.3 -/+
VESA, 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 60.3 40.0 +/+
VESA, 800 x 600 46.9 75.0 49.5 +/+
VESA, 1024 x 768 4 8.4 60.0 65.0 -/-
VESA, 1024 x 768 60.0 75.0 78.8 + /+
VESA, 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 +/+
VESA, 1600 x 1200 75.0 60.0 162.0 +/+
VESA, 1920 x 1080 6 7. 5 60.0 148.5 +/+
VESA, 2048 x 1080 66.58 60.0 147.16 +/-
CVR, 2560 x 1440 88.8 60.0 241.5 + /-
Vertical Frequency
Pixel Clock (MHz)
Sync Polarity (Horizontal/
Sync Polarity (Horizontal/
12 | About Your Monitor
DP MST Multi-Stream Transport (MST) Modes
U2421HE
MST Source Monitor Maximum number of external monitors that can be
1920 x 1080/60 Hz 3
NOTE: Maximum external monitor resolution supported is 1920 x 1080 60 Hz only.
supported
1920 x 1080/60 Hz
U2721DE
MST Source Monitor Maximum number of external monitors that can be
2560 x 1440/60 Hz 1
NOTE: Maximum external monitor resolution supported is 2560 x 1440 60 Hz only.
supported
2560 x 1440/60 Hz
USB-C MST Multi-Stream Transport (MST) Modes
U2421HE
OSD Dislay Info: Link rate(current)
HBR3 2
HBR2 1
U2721DE
OSD Dislay Info: Link rate(current)
HBR3 (High Resolution) 1
HBR3 (High Data Speed) 0
HBR2 (High Resolution) 1
HBR2 (High Data Speed) 0
Maximum number of external monitors that can be supported
1920 x 1080/60 Hz
Maximum number of external monitors that can be supported
2560 x 1440/60 Hz
About Your Monitor | 13
Electrical Specifications
Model U2421HE/U2721DE
Video input signals •Digital video signal for each dierential line
Input voltage/ frequency/current 100-240 VAC / 50 or 60 Hz ± 3 Hz / 1.8 A (maximum) Inrush current 120 V: 30 A (Max.)
Per dierential line at 100 ohm impedance
•DP/USB Type-C signal input support
240 V: 60 A (Max.)
Physical Characteristics
Model
Connector type •DP connector (include DP
Signal cable type DP to DP 1.8 M cable
Dimensions (with stand)
Height (extended)
Height (compressed)
Width
Depth
Dimensions (without stand)
Height
Width
Depth
Stand dimensions
Height (extended)
Height (compressed)
U2421HE U2721DE
in and DP out)
•HDMI connector
•USB Type-C connector
•Audio line-out
•RJ45 connector
•USB 3.0 downstream port
connector x 4
(Port with icon supports BC 1.2.)
USB Type-C 1.0 M cable
478.4 mm (18.84 in.) 520.2 mm (20.48 in.)
348.4 mm (13.72 in.) 390.2 mm (15.36 in.)
538.5 mm (21.20 in.) 612.2 mm (24.10 in.)
165.0 mm (6.50 in.) 180.0 mm (7.09 in.)
313.7 mm (12.35 in.) 355.0 mm (13.98 in.)
538.5 mm (21.20 in.) 612.2 mm (24.10 in.)
39.0 mm (1.54 in.) 39.0 mm (1.54 in.)
393.5 mm (15.49 in.) 413.6 mm (16.28 in.)
347.0 mm (13.66 in.) 367.1 mm (14.45 in.)
battery
•DP connector (include DP in and DP out)
•HDMI connector
•USB Type-C connector
•Audio line-out
•RJ45 connector
•USB 3.0 downstream port
connector x 4
(Port with icon supports BC 1.2.)
DP to DP 1.8 M cable USB Type-C 1.0 M cable
battery
14 | About Your Monitor
Width
Depth
Weight
Weight with packaging 7.55 kg (16.64 lb) 8.72 kg (19.22 lb)
Weight with stand assembly and cables
Weight without stand assembly (For wall mount or VESA mount considerations
- no cables) Weight of stand assembly 1.59 kg (3.50 lb) 1.72 kg (3.79 lb)
218.0 mm (8.58 in.) 230.0 mm (9.06 in.)
165.0 mm (6.50 in.) 180.0 mm (7.09 in.)
5.32 kg (11.73 lb) 6.24 kg (13.75 lb)
3.37 kg (7.43 lb) 4.19 kg (9.23 lb)
Environmental Characteristics
Model U2421HE/U2721DE
Compliant Standards
•ENERGY STAR certified Monitor.
•EPEAT registered where applicable. EPEAT registration varies by country.
See www.epeat.net for registration status by country.
•TCO Certified Display.
•RoHS Compliant.
•BFR/PVC Free monitor (excluding external cables).
•Meets NFPA 99 leakage current requirements.
•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 5,000 m (16,404 ft) (maximum)
Non-operating 12,192 m (40,000 ft) (maximum)
Thermal dissipation
U2421HE 478.02 BTU/hour (maximum)
59.75 BTU/hour (typical)
U2721DE 546.30 BTU/hour (maximum)
113.36 BTU/hour (typical)
About Your Monitor | 15
Power Management Modes
If you have VESA’s DPM-compliant video card or software installed in your PC, the monitor can automatically reduce its power consumption when not in use. This is referred to as power save mode*. If the computer detects input from the keyboard, mouse, or other input devices, the monitor automatically resumes functioning. The following table shows the power consumption and signaling of this automatic power saving feature.
U2421HE
VESA Modes
Normal operation
Active-off mode
Horizontal Sync
Vertical Sync
Video Power Indicator Power Consumption
Active Active Active White 140 W (maximum)**
17.5 W (typical)
Inactive Inactive Off White
Less than 0.3 W
(Glowing)
Switch off - - - Off Less than 0.3 W
Power Consumption P
on
12.87 W
Total Energy Consumption (TEC) 43.56 kWh
U2721DE
VESA Modes
Normal operation
Active-off mode
Horizontal Sync
Vertical Sync
Video Power Indicator Power Consumption
Active Active Active White 160 W (maximum)**
33.2 W (typical)
Inactive Inactive Off White
Less than 0.3 W
(Glowing)
Switch off - - - Off Less than 0.3 W
Power Consumption P
on
19.9 W
Total Energy Consumption (TEC) 64.3 kWh
16 | About Your Monitor
The OSD operates only in the normal operation mode. If you press any button in the active­off mode, the following message is displayed:
Dell UltraSharp 24/27 Monitor
No DP signal from your device.
Press any key on the keyboard or move the mouse or wake it up.
If there is no display, press the monitor button again to select the correct
input source.
U2421HE/U2721DE
*Zero power consumption in OFF mode can only be achieved by disconnecting the AC mains cable from the monitor.
**Maximum power consumption with maximum luminance, and USB active.
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.
Activate the computer and the monitor to gain access to the OSD.
NOTE: This monitor is ENERGY STAR certified.
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.
NOTE:
P
: Power consumption of On Mode as defined in Energy Star 8.0 version.
on
TEC: Total energy consumption in kWh as defined in Energy Star 8.0 version.
About Your Monitor | 17
Pin Assignments
DP port (in)
Pin number 20-pin side of theconnected signal cable
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 CONFIG1
14 CONFIG2
15 AUX CH (p)
16 GND
17 AUX CH (n)
18 Hot Plug Detect
19 Return
20 DP_PWR
18 | About Your Monitor
DP port (out)
Pin number 20-pin side of theconnected signal cable
1 ML0(p)
2 GND
3 ML0(n)
4 ML1(p)
5 GND
6 ML1(n)
7 ML2(p)
8 GND
9 ML2(n)
10 ML3(p)
11 GND
12 ML3(n)
13 CONFIG1
14 CONFIG2
15 AUX CH(p)
16 GND
17 AUX CH(n)
18 Hot Plug Detect
19 Return
20 DP_PWR
About Your Monitor | 19
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