Dell UltraSharp 30 USB-C Hub Monitor
-U3023E
User’s Guide
Model: U3023E
Regulatory model: U3023Et
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 © 2022 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.
2022 – 03
Rev. A01
Contents
Safety instructions..............................6
About your monitor .............................7
Package contents . . . . . . . . . . . . . . . . . . . . . . . . . 7
Product features. . . . . . . . . . . . . . . . . . . . . . . . . .8
Identifying parts and controls. . . . . . . . . . . . . . . . . . 10
Front view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Back view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Bottom view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Monitor specifications. . . . . . . . . . . . . . . . . . . . . . 14
Resolution specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Preset display modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
DP Multi-Stream Transport (MST) modes . . . . . . . . . . . . . . . . . 17
USB-C Multi-Stream Transport (MST) modes . . . . . . . . . . . . . . . 17
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Environmental characteristics . . . . . . . . . . . . . . . . . . . . . . . .20
Pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Plug-and-Play . . . . . . . . . . . . . . . . . . . . . . . . . . 28
LCD monitor quality and pixel policy . . . . . . . . . . . . . . 28
Maintenance guidelines . . . . . . . . . . . . . . . . . . . . . 29
Damage to monitor through incorrect cleaning methods. . . . . . . . . .29
Setting up the monitor..........................30
Connecting the stand . . . . . . . . . . . . . . . . . . . . . . 30
Using the tilt, swivel, and vertical extension . . . . . . . . . . 33
Contents | 3
Tilt, swivel and vertical extension . . . . . . . . . . . . . . . . . . . . . .33
Rotating the display . . . . . . . . . . . . . . . . . . . . . . . 33
Configuring the display settings on your computer after
rotation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Organizing your cables . . . . . . . . . . . . . . . . . . . . . 35
Connecting your monitor . . . . . . . . . . . . . . . . . . . . 36
Dell Power Button Sync (DPBS) . . . . . . . . . . . . . . . . 40
Connecting the monitor for DPBS for the first time . . . . . . . . . . . .43
Using DPBS function . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Connecting the monitor for USB-C Multi-Stream Transport (MST)
function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Connecting the monitor for USB-C . . . . . . . . . . . . . . . . . . . . .47
Securing your monitor using Kensington lock (optional) . . . 49
Removing the monitor stand . . . . . . . . . . . . . . . . . . 50
Wall mounting (optional) . . . . . . . . . . . . . . . . . . . . 51
Operating the monitor ..........................52
Power on the monitor . . . . . . . . . . . . . . . . . . . . . . 52
Using the joystick control . . . . . . . . . . . . . . . . . . . . 52
Using the menu launcher . . . . . . . . . . . . . . . . . . . . 53
Front-panel button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Using the main menu . . . . . . . . . . . . . . . . . . . . . . 56
Using the OSD lock function. . . . . . . . . . . . . . . . . . . . . . . . .72
Initial setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
OSD warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Setting the maximum resolution. . . . . . . . . . . . . . . . . . . . . . .79
Multi-Monitor Sync (MMS) . . . . . . . . . . . . . . . . . . . . . . . . .80
Setting Multi-Monitor Sync (MMS) . . . . . . . . . . . . . . . . . . . . .81
Troubleshooting ...............................82
Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Built-in diagnostics . . . . . . . . . . . . . . . . . . . . . . . 83
Common problems. . . . . . . . . . . . . . . . . . . . . . . . 84
Product specific problems . . . . . . . . . . . . . . . . . . . 86
Universal Serial Bus (USB) specific problems . . . . . . . . . 93
4 | Contents
Appendix.....................................94
FCC notices (U.S. Only) and other regulatory information. . . 94
Contacting Dell . . . . . . . . . . . . . . . . . . . . . . . . . 94
EU product database for energy label and product information
sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Contents | 5
Safety instructions
WARNING: 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) document that is shipped with your 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 components may be optional and may not ship with your
monitor. Somefeatures may not be available in certain countries.
Display
Stand riser
Stand base
Power cable (varies by country)
DisplayPort 1.8 M cable (DisplayPort to
DisplayPort)
USB-C Gen2 1.0 M cable (A to C)
About your monitor | 7
USB-C Gen2 PD3.0 cable
•Quick Setup Guide
QSG
•Safety, Environmental, and Regulatory
Information
•Factory Calibration Report
Product features
The Dell UltraSharp U3023E monitor has an active matrix, Thin-Film Transistor
(TFT), Liquid Crystal Display (LCD), and LED backlight. The monitor features include:
• 75.62 cm (30.0 in.) active area display (Measured diagonally) 2560 x 1600 (16:10)
resolution, plus full-screen support for lower resolutions.
• Wide viewing angles with 100% sRGB with an average Delta E<2.
• Tilt, swivel, pivot and vertical extension adjustment capabilities.
• Removable pedestal stand and Video Electronics Standards Association (VESA™)
100 mm mounting holes for flexible mounting solutions.
• Ultra-thin bezel minimizes the bezel gap during multi-monitor usage, enabling
easier set up with an elegant viewing experience.
• Extensive digital connectivity with DP helps future-proof your monitor.
• Single USB-C Power Delivery (90W) 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 computer.
• On-Screen Display (OSD) adjustments for ease of set-up and screen
optimization.
• Power and OSD buttons lock.
• Security lock slot.
• ≤ 0.3 W in Off Mode.
• Supports Picture by Picture (PBP) Select mode.
• Support DSC (Display Stream Compression) function. DSC achieves up to 1:3
compression ratio without Visual Loss.
• Supports USB KVM function.
• The Monitor is designed with Dell Power Button Sync (DPBS) feature to control
PC system power state from monitor power button. *
• The Monitor allows multiple monitors that are daisy chained via DisplayPort to
synchronize a pre-defined group of OSD settings in the background by MultiMonitor Sync (MMS).
8 | About your monitor
• Premium Panel Exchange for peace of mind.
• Optimize eye comfort with a flicker-free screen minimizes hazard blue light
emission.
• The Monitor use Low Blue Light panel and compliance with TUV Rheinland
(Hardware Solution) at factory reset/default setting model.
• Decreases the level of hazard blue light emitted from the screen to make viewing
more comfortable for your eyes.
• The Monitor adopts Flicker-Free technology, which clears the eye visible flicker,
brings comfort viewing experience and preventing users suffer from eye strain
and fatigue.
* PC system that supports DPBS is in Dell website.
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.
About your monitor | 9
Identifying parts and controls
1
Front view
Label Description Use
1 Power LED indicator Solid white light indicates the monitor is turned on and
functioning normally.
Blinking white light indicates the monitor is in Standby
Mode.
10 | About your monitor
Back view
7
1
2
3
654
Label Description Use
1 VESA mounting holes
(100 mm x 100 mm-behind
attached VESA cover)
2 Regulatory label Lists the regulatory approvals.
3 Stand release button Releases stand from the monitor.
4 Power On/Off button To turn the monitor on or off.
5 Joystick Use it to control the OSD menu.
6 Mac address, Barcode, serial
number, and Service Tag label
7 Cable-management slot Use to organize cables by inserting them
Wall mount monitor using VESA-compatible
wall mount kit (100 mm x 100 mm).
For more information, see Operating the
monitor.
Refer to this label if you need to contact Dell
for technical support. The Service Tag is a
unique alphanumeric identifier that enables
Dell service technicians to identify the
hardware components in your computer and
access warranty information.
through the slot.
About your monitor | 11
Bottom view
9
1 4 5 6 7 832
9
10 1211 13
15
16
14
Label Description Use
1 Security lock slot Secures monitor with security cable lock (sold separately).
2
3
4
5
6 DP port (out)
Power connector
HDMI port
DisplayPort in
USB-C port
(Video + Data)
Connect the power cable.
Connect your computer with the HDMI cable (Optional).
Connect your computer with the DisplayPort cable.
Connect to your computer using the USB-C cable.
The USB-C port offer the fastest transfer rate and the
alternate mode with DP 1.4 support the maximum resolution
of 2560 x 1600 at 60 Hz PD 20 V/4.5 A, 15 V/3 A, 9 V/3 A,
5 V/3 A.
NOTE: USB-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.
12 | About your monitor
7 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.
USB-C
8
9,10,
11,13
12
14
15 Stand lock
16
upstream port
Data only）
（
Super speed
USB 10Gbps
(USB 3.2 Gen2)
(4)
RJ45 connector
USB-C
downstream port
Dell soundbar
mounting slots
Connect to your computer using the USB cable (A to C or
C to C). Once the USB cable is connected, you can use the
USB downstream connectors on the monitor.
NOTE: Remove the rubber plug when using USB-C
connector.
Connect your USB device. You can use these ports only
after you have connected the USB cable (A to C or C to C)
from the computer to the monitor.
Port with battery icon supports Battery Charging Rev.
1.2.
Connect Internet. You can surf Internet via RJ45 only after
you have connected the USB cable (A to C or C to C) from
the computer to the monitor.
Port with icon supports 5 V/ 3 A.
Connect your USB device. You can use this port only after
you have connected the USB cable (A to C or C to C) from
the computer to the monitor.
Lock the stand to the monitor using a M3 x 6 mm screw
(screw not included).
Attaches the optional Dell soundbar (sold separately).
About your monitor | 13
Monitor specifications
Screen type Active matrix - TFT LCD
Panel Type In-plane switching Technology
Aspect ratio 16:10
Viewable image dimensions
Diagonal 75.62 cm (30.0 in.)
Active Area
Horizontal 641.28 mm (25.25 in.)
Vertical 400.80 mm (15.78 in.)
Area 257025.02 mm2 (398.39 in.2)
Pixel pitch 0.2505 mm x 0.2505 mm
Pixel per inch (PPI) 101.4
Viewing angle
Horizontal 178° (typical)
Vertical 178° (typical)
Brightness 350 cd/m² (typical)
Contrast ratio 1000 to 1 (typical)
Display screen coating Anti-glare treatment of the front polarizer (3H) hard coating
Backlight LED
Response Time (Gray
to Gray)
Color depth 1.07 billion colors
Color gamut* 100% sRGB
Calibration accuracy Delta E < 2 (average) (sRGB)
5 ms (Fast mode)
8 ms (Normal mode)
95% DCI-P3
14 | About your monitor
Connectivity •1 x DP 1.4 (HDCP 1.4)
•1 x HDMI 1.4 (HDCP 1.4)
•1 x USB-C (DP 1.4, PD: 90W, 2/4 lanes switch USB 3.2
Gen2, 10 Gbps) - upstream
•1 x USB-C (USB 3.2 Gen2, 10 Gbps) upstream
•1 x DP (Out)
•1 x Analog 2.0 audio line out (3.5 mm jack)
•3 x USB-A (USB 3.2 Gen2, 10 Gbps) downstream
•1 x RJ45
Quick Access:
•1 x USB-A (USB 3.2 Gen2, 10 Gbps) downstream with BC 1.2
•1 x USB-C (USB 3.2 Gen2, 10 Gbps, 15 W) downstream
Border width (edge of monitor to active area)
To p
Left/Right
Bottom
Adjustability
Height adjustable
stand
Tilt -5° to 21°
Swivel -30° to 30°
Pivot -90° to 90°
Cable management Yes
Dell Display Manager
(DDM)Compatibility
Security Security lock slot (cable lock sold separately)
7.30 mm
7.30 mm
10.50 mm
150 mm
Easy Arrange
and other key features
* At panel native only, under Custom Mode preset.
About your monitor | 15
Resolution specifications
(kHz)
(Hz)
(MHz)
Vertical)
VGA, 640 x 480
31.47
60.00
25.18
-/-
VESA, 640 x 480
37.5 0
75.00
31.50
-/-
VESA, 800 x 600
37.8 8
60.00
40.00
+/+
VESA, 800 x 600
46.88
75.00
49.50
+/+
VESA, 1024 x 768
48.36
60.00
65.00
-/-
MAC, 1152 x 864
67.5 0
75.00
108.00
+/+
VESA, 1280 x 720
45.00
60.00
74.25
+/+
CVT, 1280 x 800
49.70
60.00
83.50
-/+
VESA, 1280 x 1024
64.00
60.00
108.00
+/+
VESA, 1280 x 1024
80.00
75.00
135.00
+/+
VESA, 1600 x 1200
75.00
60.00
162.00
+/+
VESA, 1680 x 1050
65.29
60.00
146.25
-/+
VESA, 1920 x 1080
67.5 0
60.00
148.50
+/+
CVT, 1920 x 1200
74.04
60.00
154.00
+/-
CVT, 2048 x 1080
26.37
24.00
58.23
+/-
CVT, 2560 x 1600-R
98.71
60.00
268.50
+/-
Horizontal scan range 30 kHz to 113 kHz
Vertical scan range 56 Hz to 76 Hz
Maximum preset resolution 2560 x 1600 at 60 Hz
Video display capabilities (HDMI) 480i, 480p, 576i, 576p, 720p, 1080i, 1080p
Video display capabilities (DP &
USB-C alternate mode)
480p, 576p, 720p, 1080p
Preset display modes
Display mode Horizontal
frequency
VGA, 720 x 400 31.47 70.00 28.32 -/+
VESA, 1024 x 768 60.02 75.00 78.75 +/+
Vertical
frequency
Pixel
clock
Sync polarity
(Horizontal/
CVT, 2048 x 1080 66.66 60.00 147.18 +/-
16 | About your monitor
DP Multi-Stream Transport (MST) modes
MST Source Monitor Maximum number of external monitors that can be
supported
2560 x 1600/60 Hz
2560 x 1600/60 Hz 2
NOTE: Maximum external monitor resolution supported is 2560 x 1600/60 Hz only.
USB-C Multi-Stream Transport (MST) modes
OSD
Display Info:
Stream Info
5.4Gbps
8.1Gbps
8.1Gbps,
DSC
Maximum number of external
USB-C Prioritization
High Data Speed 0 USB 3.2 Gen2
High Resolution 1 USB 2.0
High Data Speed 0 USB 3.2 Gen2
High Resolution 2 USB 2.0
High Data Speed 2 USB 3.2 Gen2
High Resolution 2 USB 2.0
monitors that can be supported
2560 x 1600/60 Hz
USB Speed
About your monitor | 17
Electrical specifications
Video input signals •Digital video signal for each dierential line
Per dierential line at 100 ohm impedance
•DP/HDMI/USB-C signal input support
Input voltage/
frequency/current
Inrush current 120 V: 42 A (Max.)
Power Consumption 0.2 W (Off Mode)
1
As dened in EU 2019/2021 and EU 2019/2013.
2
Max brightness and contrast setting with maximum power loading on all USB ports.
3
Pon: Power consumption of On Mode as dened in Energy Star 8.0 version.
TEC: Total energy consumption in kWh as dened in Energy star 8.0 version.
This document is informational only and reects laboratory performance.
Your product may perform dierently, 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.
100-240 VAC / 50 or 60 Hz ± 3 Hz / 2.8 A (maximum)
240 V: 80 A (Max.)
Inrush current is measured at an ambient temperature of 0°C.
1
0.3 W (Standby Mode)
26.6 W (On Mode)
210 W (Max)
23.14 W (Pon)
2
3
74.65 kWh (TEC)
1
1
3
NOTE: This monitor is ENERGY STAR certied.
This product qualies 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 specied limit.
18 | About your monitor
Physical characteristics
Connector type •DP connector (include DP in and DP out)
•HDMI connector
•USB-C connector
•Audio line-out
•USB-C (USB 3.2 Gen2, 10 Gbps) upstream connector
•USB-A (USB 3.2 Gen 2, 10 Gbps) downstream connector
x 4 (Port with battery icon supports BC 1.2.)
•RJ45 connector
•USB-C (USB 3.2 Gen2, 10 Gbps, 15W) downstream
connector
Signal cable type DP to DP 1.8 M cable
USB 3.2 Gen2 A to C 1.0M cable
USB 3.2 Gen2 C to C 1.0 M cable
Dimensions (with stand)
Height (extended) 622.70 mm (24.52 in.)
Height (compressed) 472.70 mm (18.61 in.)
Width 655.90 mm (25.82 in.)
Depth 230.00 mm (9.06 in.)
Dimensions (without stand)
Height 418.60 mm (16.48 in.)
Width 655.90 mm (25.82 in.)
Depth 53.00 mm (2.09 in.)
Stand dimensions
Height (extended) 483.30 mm (19.03 in.)
Height (compressed) 436.50 mm (17.19 in.)
Width 300.00 mm (11.81 in.)
Depth 230.00 mm (9.06 in.)
Weight
Weight with packaging 15.05 kg (33.18 lb)
Weight with stand
assembly and cables
11.13 kg (24.54 lb)
About your monitor | 19
Weight without stand
assembly (For wall
mount or VESA mount
considerations - no
cables)
Weight of stand
assembly
6.48 kg (14.29 lb)
4.28 kg (9.44 lb)
Environmental characteristics
Compliant Standards
•ENERGY STAR certified Monitor.
•EPEAT registered where applicable. EPEAT registration varies by country.
See https://www.epeat.net for registration status by country.
•TCO Certified & TCO Certified Edge.
•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 716.55 BTU/hour (maximum)
90.76 BTU/hour (on mode)
20 | About your monitor
Pin assignments
DP port (in)
Pin number 20-pin side of theconnected 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
About your monitor | 21
DP port (out)
Pin number 20-pin side of theconnected 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
22 | About your monitor
HDMI port
Pin number 19-pin side of theconnected 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 | 23
USB-C port
Pin Signal Pin Signal
A1 GND B12 GND
A2 SSTXp1 B11 SSRXp1
A3 SSTXn1 B10 SSRXn1
A4 VBUS B9 VBUS
A5 CC1 B8 SBU2
A6 Dp1 B7 Dn1
A7 Dn1 B6 Dp1
A8 SBU1 B5 CC2
A9 VBUS B4 VBUS
A10 SSRXn2 B3 SSTXn2
A11 SSRXp2 B2 SSTXp2
A12 GND B1 GND
24 | About your monitor
Universal Serial Bus (USB)
This section gives you information about the USB ports available on your monitor.
NOTE: Up to 2 A on USB downstream port (port with battery
icon) with BC 1.2 compliance devices; up to 0.9 A on the other 3 USB
downstream ports; Up to 3 A on USB-C downstream port (port with
icon) with 5 V/3 A compliance devices.
Your monitor has the following USB ports:
• 2 upstream - at rear.
• 5 downstream - 2 at bottom, 3 at rear.
Power Charging Port - the ports with battery icon supports fast current
charging capability if the device is BC 1.2 compatible. The USB-C downstream
port with icon supports fast current charging capability if the device is 5V/3A
compatible.
NOTE: The monitor’s USB ports work only when the monitor is on or in
Standby Mode. On in Standby Mode, if the USB cable (A to C or C to C) is
plugged in, the USB ports can work normally. Otherwise, follow the OSD
setting of Other USB Charging, if the setting is “On in Standby Mode”
then USB work normally, otherwise USB is disabled. If you turn off the
monitor and then turn it on, the attached peripherals may take a few
seconds to resume normal functionality.
Super speed USB 10 Gbps (USB 3.2 Gen2) device
Transfer speed Data rate Maximum power consumption (each port)
Super speed+ 10 Gbps 4.5 W
Super speed 5 Gbps 4.5 W
Hi-Speed * 480 Mbps 2.5 W
Full speed * 12 Mbps 2.5 W
NOTE: Device speed when High Resolution is selected.
USB 2.0 Device
Transfer speed Data rate Maximum power consumption (each port)
Hi-Speed 480 Mbps 2.5 W
Full speed 12 Mbps 2.5 W
Low speed 1.5 Mbps 2.5 W
About your monitor | 25
USB 3.2 Gen2 (10Gbps)
PHY SIDE
CABLE SIDE
RJ45
GREEN
GREEN
ORANGE
SHIELD
GROUND
2kV, 1000pF
downstream port (Bottom)
USB 3.2 Gen2 (10Gbps)
downstreamport (Rear)
Pin number Signal name Pin number Signal name
1 VBUS 1 VBUS
2 D- 2 D3 D+ 3 D+
4 GND 4 GND
5 StdA_SSRX- 5 StdA_SSRX6 StdA_SSRX+ 6 StdA_SSRX+
7 GND_DRAIN 7 GND_DRAIN
8 StdA_SSTX- 8 StdA_SSTX9 StdA_SSTX+ 9 StdA_SSTX+
Shell Shield Shell Shield
RJ45 Port (Connector Side)
Pin Signal Pin Signal
1 TD1 + 8 TD3 -
26 | About your monitor
2 TD1 - 9 TD4 +
3 TD2 + 10 TD4 -
4 TD2 - 11 GREEN_ORANGE
5 CT 12 GREEN_ORANGE
6 CT 13 GREEN
7 TD3 + 14 GREEN
Driver installation
Install the Realtek USB GBE Ethernet Controller Driver available for your system. This
is available for download at https://www.dell.com/support under the “Driver and
download” section.
Network (RJ45) data rate via USB-C max speed is 1000 Mbps.
NOTE: This LAN port is 1000Base-T IEEE 802.3az compliant, supporting
Mac Address (Printed on model label) Pass-thru (MAPT), Wake-on-LAN
(WOL) from standby mode (S3 only) and UEFI* PXE Boot function[UEFI
PXE Boot is not supported on Dell Desktop PC’s (except for OptiPlex
7090/3090 Ultra Desktop)], these 3 features depend on BIOS settings and
version of the OS. Functionality may vary with Non Dell PC’s.
*UEFI stands for Unified Extensible Firmware Interface.
RJ45 Connector LED Status:
Right LED
Left LED
LED Color Description
Right LED Amber or Green Speed indicator:
•AmberOn-1000Mbps
•GreenOn-100Mbps
•Off-10Mbps
Left LED Green Link / Activity indicator:
•Blinking-Activityontheport.
•GreenOn-Linkisbeingestablished.
•Off-Linkisnotestablished.
NOTE: RJ45 cable is non in-box standard accessory.
About your monitor | 27
Plug-and-Play
You can install the monitor in any Plug-and-Play-compatible system. The monitor
automatically provides the computer system with its extended display identification
data (EDID) using display data channel (DDC) protocols so the computer can configure
itself and optimize the monitor settings. Most monitor installations are automatic;
you can select different settings if desired. For more information about changing the
monitor settings, see Operating the 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 LCD Monitor Pixel Policy, see
the guidelines at: https://www.dell.com/pixelguidelines.
28 | About your monitor
Maintenance guidelines
Damage to monitor through incorrect cleaning methods
WARNING: Before cleaning the monitor, unplug the monitor power cable
from the electrical outlet.
CAUTION: Read and follow the Safety instructions before cleaning the
monitor.
Improper cleaning methods can result in physical damage to Dell monitors. Physical
defects may affect the screen and body of the monitor.
Follow the instructions in the list below when cleaning the monitor:
• To clean the Dell monitor screen, lightly dampen a soft, clean cloth with water.
If possible, use a special screen-cleaning tissue or solution suitable for the Dell
monitor screen.
CAUTION: Do not use detergents of any kind or other chemicals such as
benzene, thinner, ammonia, abrasive cleaners, alcohol, or compressed air.
• Do not directly spray the cleaning solution or even water on the surface of the
monitor. Directly spraying liquid onto the panel will roll down to the bottom of the
panel and corrode the electronics resulting in permanent damage. Instead, apply
solution or water to soft cloth material.
NOTE: Using cleaner may cause changes in the appearance of the monitor,
such as color fading, milky film on the monitor, deformation, uneven dark
shade, and screen surface peeling.
NOTE: Monitor damages due to improper cleaning methods and the use
of benzene, thinner, ammonia, abrasive cleaners, alcohol, compressed air,
detergent of any kind will lead to a Customer Induced Damage (CID). CID
is not covered under the standard Dell warranty.
About your monitor | 29
Setting up the monitor
Connecting the stand
NOTE: The stand riser and stand base are detached when the monitor is
shipped from the factory.
NOTE: The following instructions are applicable only for the stand shipped
with your monitor. If you are connecting a stand that you purchased from
any other source, follow the set up instructions that are included with the
stand.
To attach the monitor stand:
1. Open the front ap of the box to get the stand riser and stand base.
2. Align and place the stand riser on the stand base.
3. Open the screw handle at the bottom of the stand base and turn it clockwise to
secure the stand assembly.
30 | Setting up the monitor
4. Close the screw handle.
1
3
2
5. Open the protective cover on the monitor to access the VESA slot on the
monitor.
6. Slide the tabs on the stand riser into the slots on the display back cover and
lower the stand assembly to snap it into place.
Setting up the monitor | 31
7. Hold the stand riser and lift the monitor carefully, then place it on a at surface.
NOTE: Hold the stand riser firmly when lifting the monitor to avoid any
accidental damage.
8. Lift the protective cover from the monitor.
32 | Setting up the monitor
Using the tilt, swivel, and vertical extension
NOTE: The following instructions are applicable only for the stand that
was shipped with your monitor. If you are connecting a stand that you
purchased from any other source, follow the set up instructions that were
included with the stand.
Tilt, swivel and vertical extension
With the stand attached to the monitor, you can tilt the monitor for the most
comfortable viewing angle.
5°
30°
150 mm
21°
30°
NOTE: The stand is detached when the monitor is shipped from the
factory.
Rotating the display
Before you rotate the display, extend the display vertically until the top of the stand
riser and then tilt the display backwards until the maximum to avoid hitting the bottom
edge of the display.
1
2
90°
90°
Setting up the monitor | 33
NOTE: To toggle the display setting on your Dell computer between
landscape and portrait when rotating the display, download and install the
latest graphics driver. To download, go to https://www.dell.com/support/
drivers and search for the appropriate driver.
NOTE: When the display is in portrait mode, you may experience
performance degradation when using graphic-intensive applications such
as 3D gaming.
Configuring the display settings on your computer after rotation
After you have rotated the display, complete the procedure given below to configure
the display settings on your computer.
NOTE: If you are using the monitor with a non-Dell computer, go to the
graphics card manufacturer’s website or your computer manufacturer
website for information on how to rotate the contents of your display.
To configure the Display Settings:
1. Right-click on the Desktop and click Properties.
2. Select the Settings tab and click Advanced.
3. If you have an AMD graphics card, select the Rotation tab and set the
preferred rotation.
4. If you have an nVidia graphics card, click the nVidia tab, in the left-hand
column select NVRotate, and then select the preferred rotation.
5. If you have an Intel® graphics card, select the Intel graphics tab, click Graphic
Properties, select the Rotation tab, and then set the preferred rotation.
NOTE: If you do not see the rotation option or it is not working correctly,
go to https://www.dell.com/support and download the latest driver for
your graphics card.
34 | Setting up the monitor
Organizing your cables
After attaching all necessary cables to your monitor and computer, (see Connecting
your monitor for cable attachment) organize all cables as shown above.
If your cable is not able to reach your PC, you may connect directly to the PC without
routing through the slot on the monitor stand.
Setting up the monitor | 35
Connecting your monitor
WARNING: Before you begin any of the procedures in this section, follow
the Safety instructions.
To connect your monitor to the computer:
1. Turn o your computer.
2. Connect the DisplayPort or USB cable, and the USB-C cable from your monitor
to the computer.
3. Turn on your monitor.
4. Select the correct input source from the OSD Menu on your monitor and then
turn on your computer.
NOTE: U3023E default setting is DisplayPort 1.4. A DisplayPort 1.1 Graphic
card may not display normally. Please refer to product specific problems –
No image when using DP connection to the PC to change default setting.
Connecting the HDMI Cable (optional)
36 | Setting up the monitor
Connecting the DP Cable
Connecting the monitor for DP Multi-Stream Transport (MST) function
NOTE: Supports the DP MST feature. To make use of this feature, your PC
Graphics Card must be certified to at least DP1.2 with MST option.
NOTE: Remove the rubber plug when using DP out connector.
Setting up the monitor | 37
Connecting the USB-C Cable (A to C)
NOTE: With this connection only data is available and no video. Need
another video connection for display.
Connecting the USB-C Cable (C to C)
The USB-C port on your monitor:
• Can be used as USB-C or DisplayPort 1.4, alternatively.
• Supports USB Power Delivery (PD), with profiles up to 90 W.
NOTE: Regardless of the power requirement/actual power consumption
of your laptop, or the remaining power runtime in your battery, the Dell
U3023E monitor is designed to supply power delivery of up to 90 W to
your laptop.
Rated power (on laptops that have
USB-C with Power Delivery)
45 W 45 W
65 W 65 W
90 W 90 W
130 W Not supported
38 | Setting up the monitor
Maximum charging power
Connecting the Monitor for USB-C Multi-Stream Transport (MST) Function
NOTE: The maximum number of supported U3023E via MST is subjected
to the bandwith of the USB-C source. Please refer to “product specific
problems –No image when using USB-C MST”.
NOTE: Remove the rubber plug when using DP out connector.
Connecting the Monitor for RJ45 Cable (optional)
Setting up the monitor | 39
Dell Power Button Sync (DPBS)
• The U3023E monitor is designed with Dell Power Button Sync (DPBS) feature to
allow you to control PC system power state from the monitor power button. This
feature is compatible with Dell OptiPlex 7090/3090 Ultra platform, and is only
supported over USB-C interface.
USB-C
OptiPlex 7090/3090 Ultra
USB-C
• To make sure the DPBS function works for the first time, you should do the
following steps for Dell OptiPlex 7090/3090 Ultra platform in the Control Panel.
NOTE: DPBS only supports the port with icon.
1. Go to Control Panel.
40 | Setting up the monitor
2. Select Hardware and Sound, followed by Power Options.
3. Go to System Settings.
4. In the drop-down menu of When I press the power button, there are a few
options for selection namely Do nothing/Sleep/Hibernate/Shut down,
and you can select Sleep/Hibernate/Shut down.
Setting up the monitor | 41
NOTE: Do not select Do nothing, otherwise monitor power button cannot sync
with PC system power state.
42 | Setting up the monitor
Connecting the monitor for DPBS for the first time
USB-C
Initial system power state(OFF)
USB-C
Initial monitor power state(OFF)
For the first time setting up the DPBS function, please follow below steps:
1. Make sure both the PC and monitor is OFF.
2. Connect the USB-C cable from the PC to the monitor.
3. Press the monitor power button to turn ON the monitor.
4. Both the monitor and PC will turn ON momentarily. Wait for a while (approximately 6
seconds) and both the PC and monitor will turn OFF.
5. Press either the monitor power button or PC power button, both the PC and
monitor will turn ON. The PC system power state is in sync with the monitor power
button.
NOTE: When the monitor and PC are both at power OFF state at first time,
it is recommended that you turn ON the monitor first, then connect the
USB-C cable from the PC to the monitor.
NOTE: You can power the OptiPlex 7090/3090 Ultra platform using its DC
adaptor jack. Alternatively, you can power the OptiPlex 7090/3090 Ultra
platform using the monitor’s USB-C cable through Power Delivery (PD).
Make sure to set USB-C Charging to On in Off Mode.
Setting up the monitor | 43
Using DPBS function
When you press the monitor power button or PC power button, the Monitor / PC
state is as follows:
1 2
USB-C
Initial monitor power state(ON)
New Power state of monitor(OFF)
Initial system power state(ON)
USB-C
1 2
USB-C
Initial system power state(OFF)
USB-C
Initial monitor power state(OFF)
Press PC/Monitor
power button
Press PC/Monitor
power button
New Power state of system(OFF)
USB-C
New Power state of monitor(ON)
New Power state of system(ON)
USB-C
When the monitor and PC power state are both ON, while you press and hold 4
seconds on monitor power button, the screen prompt will ask if you would like to
shut down the PC.
USB-C
Press and hold 4s
44 | Setting up the monitor
Slide to shut down your PC
When the monitor and PC power state are both ON, while you press and hold 10
seconds on monitor power button, the PC will shut down.
USB-C
PC will shut downPress and hold 10s
Setting up the monitor | 45
Connecting the monitor for USB-C Multi-Stream Transport (MST) function
A PC is connected to two monitors in an initially OFF power state, and the PC system
power state is in sync with Monitor 1 power button. When you press the Monitor 1 or
PC power button, both the Monitor 1 and PC turns ON. Meanwhile the Monitor 2 will
remain OFF. You need to manually press the power button on Monitor 2 to turn it ON.
USB-C
Monitor 1Monitor 2
USB-C
DP out
USB-C
System power state(ON)
DP out
DP in
Similarly, a PC is connected to two monitors in an initially ON power state, and the
PC system power state is in sync with Monitor 1 power button. When you press the
Monitor 1 or PC power button, both the Monitor 1 and PC turns OFF. Meanwhile the
Monitor 2 will be in Standby mode. You need to manually press the power button on
Monitor 2 to turn it OFF.
DP in
Going into Standby mode...
46 | Setting up the monitor
USB-C
System power state(OFF)
Monitor 1Monitor 2
Connecting the monitor for USB-C
The Dell OptiPlex 7090 Ultra platform has two USB-C ports, both Monitor 1 and
Monitor 2 power state can sync with the PC.
While the PC and two monitors are in an initially ON power state, by pressing the
power button on Monitor 1 or Monitor 2 will turn OFF the PC, Monitor 1, and Monitor 2.
NOTE: DPBS only supports the port with icon.
USB-C
USB-C
port 1
System power state(ON)
USB-C
port 2
Monitor 1
Monitor 2
USB-C
USB-C
Pressing power button on Monitor 1 or 2
System power state(OFF)
USB-C
port 1
Monitor 1
USB-C
port 2
Monitor 2
USB-C
Setting up the monitor | 47
Make sure to set USB-C Charging to On in Off Mode. While the PC and two
monitors are in an initially OFF power state, by pressing the power button on Monitor 1
or Monitor 2 will turn ON the PC, Monitor1, and Monitor 2.
USB-C
USB-C
port 1
System power state(OFF)
Pressing power button on Monitor 1 or 2
USB-C
port 2
System power state(ON)
USB-C
port 2
Monitor 1
Monitor 2
USB-C
port 1
Monitor 1
Monitor 2
USB-C
USB-C
USB-C
48 | Setting up the monitor
Securing your monitor using Kensington lock (optional)
The security lock slot is located at the bottom of the monitor. (See Security lock
slot)
For more information on using the Kensington lock (purchased separately), see the
documentation that is shipped with the lock.
Secure your monitor to a table using the Kensington security lock.
NOTE: The image is for the purpose of illustration only. Appearance of the
lock may vary.
Setting up the monitor | 49
Removing the monitor stand
CAUTION: To prevent scratches on the LCD screen when removing the
stand,ensure that the monitor is placed on a soft, clean surface.
NOTE: The following instructions are applicable only for the stand that
was shipped with your monitor. If you are connecting a stand that you
purchased from any other source, follow the set up instructions that were
included with the stand.
To remove the stand:
1. Place the monitor on a soft cloth or cushion.
2. Press and hold the stand-release button.
3. Lift the stand up and away from the monitor.
3
2
50 | Setting up the monitor
Wall mounting (optional)
NOTE: Use M4 x 10 mm screws to connect the monitor to the wall-
mounting kit.
Refer to the instructions that come with the VESA-compatible wall mounting kit.
1. Place the monitor on a soft cloth or cushion on a stable flat table.
2. Remove the stand.
3. Use a Phillips crosshead screwdriver to remove the four screws securing the
plastic cover.
4. Attach the mounting bracket from the wall mounting kit to the monitor.
5. Mount the monitor on the wall as instructed in the documentation that shipped
with the wall-mounting kit.
NOTE: For use only with UL or CSA or GS-listed wall mount bracket with
minimum weight/load bearing capacity of 25.92 kg (57.1 4 lb).
Setting up the monitor | 51
Operating the monitor
Power on the monitor
Press the button to turn on the monitor.
Using the joystick control
To modify the OSD adjustments using the joystick control on the rear end of the
monitor, do the following:
1. Press the joystick to open the OSD Menu Launcher.
2. Move the joystick up/down/left/right to toggle between the OSD menu options.
52 | Operating the monitor
Joystick functions
Function Description
Press joystick to open the OSD Menu Launcher.
For right and left navigation.
For up and down navigation.
Using the menu launcher
Press the joystick to open the OSD menu launcher.
Preset Modes
Menu Launcher
• Toggle the joystick Up to open the Main Menu.
• Toggle the joystick Left or Right to select the desired Shortcut Keys.
• Toggle the joystick Down to Exit.
Operating the monitor | 53
Menu launcher details
The following table describes the Menu Launcher icons:
Menu launcher icon Description
Opens the On-Screen Display (OSD).
For more information, see the Using the main menu
Main Menu
USB switch
(Shortcut key 1)
section.
Select to switch between the USB upstream sources in
PBP mode.
Input Source
(Shortcut key 2)
Preset Modes
(Shortcut key 3)
Brightness/Contrast
(Shortcut key 4)
PIP/PBP Mode
(Shortcut key 5)
Exit
Sets the Input Source.
Allows to choose from a list of Preset colormodes.
To directly access the Brightness/Contrast adjustment
sliders.
Use this button to choose from a list of PIP/PBP.
Exits from the OSD main menu.
54 | Operating the monitor
Front-panel button
Use the buttons on the front of the monitor to adjust the image settings.
Front panel Description
1
Up Down
2
Previous
3
Next
4
Tick
Use the Up (increase) and Down (decrease) buttons to
adjust items in the OSD menu.
Use the Previous button to go back to the previous menu.
Use the Next button to confirm your selection.
Use the Tick button to confirm your selection.
Operating the monitor | 55
Using the main menu
Icon Menu and
Description
Submenus
Brightness/
Contrast
Activates Brightness/Contrast adjustment.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
75% 75%
Brightness Adjusts the luminance of the backlight (Range: 0 - 100).
Move the joystick Up to increase brightness.
Move the joystick Down to decrease brightness.
Contrast Adjust the Brightness first, and then adjust Contrast only if
further adjustment is necessary.
Move the joystick Up to increase contrast and move the
joystick Down to decrease contrast (Range: 0 - 100).
The Contrast function adjusts the degree of difference
between darkness and lightness on the monitor screen.
Exit
56 | Operating the monitor
Icon Menu and
Description
Submenus
Input Source Selects between different video inputs that are connected to
your monitor.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
USB-C 90W
DP
HDMI
Auto Select On
Auto Select for USB-C Prompt for Multiple Inputs
Rename Inputs
Reset Input Source
USB-C 90W
Exit
USB-C 90W
Select USB-C 90W input when you are using the
USB-C 90W connector. Press the joystick button to
confirm the selection.
DP Select DP input when you are using the DP (DisplayPort)
connector. Press the joystick button to confirm the selection.
HDMI Select the HDMI input when you are using the HDMI
connector. Press the joystick button to confirm the selection.
Auto Select Allows you to scan for available input sources.
Press to select this function.
Auto Select for
USB-C
Press to select these functions:
•Prompt for Multiple Inputs: always show Switch to
USB-C Video Input message for user to choose whether to
switch or not.
•Yes: The monitor always switch to USB-C video without
asking while USB-C connected.
•No: The monitor will NOT auto switch to USB-C video from
another available input.
Rename Inputs Allows you to Rename Inputs.
Reset Input
Source
Resets all settings under the Input Source menu to the
factory defaults. Press to select this function.
Operating the monitor | 57
Icon Menu and
Description
Submenus
Color Adjusts the color setting mode.
UltraSharp 30 Monitor
Brightness/Contrast Preset Modes
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Input Color Format
Reset Color
Standard
RGB
Preset Modes When you select Preset Modes, you can choose Standard,
Movie, Game, Color Temp., Color Space or Custom
Color from the list.
UltraSharp 30 Monitor
Brightness/Contrast Preset Modes
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Input Color Format
Reset Color
Standard
Movie
Game
Color Temp.
Color Space
Custom Color
Exit
•Standard: Default Color setting, This monitor uses a low
blue light panel, and is certied by TUV to reduce blue
light output and create a more relaxing and less stimulating
image while reading content on the screen.
•Movie: Ideal for movies.
•Game: Ideal for most gaming applications.
•Color Temp.: The screen appears warmer with a red/
yellow tint with slider set at 5,000K or cooler with blue tint
with slider set at 10,000K.
58 | Operating the monitor
Exit
Icon Menu and
Submenus
Input Color
Format
Description
•Color Space: Allows users to select the color space:
sRGB, DCI-P3.
•Custom Color: Allows you to manually adjust the color
settings. Press the joystick left and right buttons to adjust
the Red, Green, and Blue values and create your own preset
color mode.
Allows you to set the video input mode to:
•RGB: Select this option if your monitor is connected to a
computer or a media player that supports RGB output.
•YCbCr: Select this option if your media player supports
only YCbCr output.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Preset Modes
Input Color Format
Reset Color
RGB
YCbCr
Exit
Hue Use joystick Up or Down to adjust the Hue from 0 to 100.
NOTE: Hue adjustment is available only for Movie and
Game mode.
Saturation Use joystick Up or Down to adjust the Saturation from 0 to
100.
NOTE: Saturation adjustment is available only for Movie and
Game mode.
Reset Color Resets your monitor’s color settings to the factory defaults.
Press to select this function.
Operating the monitor | 59
Icon Menu and
Description
Submenus
Display Use the Display menu to adjust image.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Aspect Ratio
USB-C Prioritization
Reset Display
16:10
50Sharpness
NormalResponse Time
OMST
OMulti-Monitor Sync
Aspect Ratio Adjust the image ratio to 16:10, Auto Resize, 4:3, 1:1.
Sharpness Makes the image look sharper or softer.
Move the joystick up and down to adjust the sharpness from
‘0’ to ‘100’.
Response Time Allows you to set the Response Time to Normal or Fast.
MST DP Multi Stream Transport, Set to ON enables MST (DP
out), Set to OFF disables MST function.
NOTE: When DP/USB-C upstream cable and DP
downstream cable is connected, monitor will set MST =
ON automatically, this action will only be done once after
Factory Reset or Display Reset. Please refer to “Connecting
the monitor for DP Multi-Stream Transport (MST)
function”.
USB-C
Prioritization
Allows you to specify the priority to transfer the data with
high resolution (High Resolution) or high speed (High Data
Speed) when using the USB-C port/DisplayPort.
Exit
60 | Operating the monitor
Icon Menu and
Description
Submenus
Multi-Monitor
Sync
Multi-Monitor Sync allows multiple monitors that are daisy
chained via DisplayPort to synchronize a pre-defined group
of OSD settings in the background.
An OSD option, Multi-Monitor Sync will be created in
Display Menu to allow user to enable/disable syncing.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Aspect Ratio
Sharpness
Response Time
MST
USB-C Prioritization
Multi-Monitor Sync
Reset Display
On
O
Reset Display Resets all settings under the Display menu to the factory
defaults.
Press to select this function.
Exit
Operating the monitor | 61
Icon Menu and
Description
Submenus
PIP/PBP This function brings up a window displaying image from
another input source.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
PIP/PBP Mode O
Exit
Main Window
Sub-Window
USB-C DP
USB-C √ √
DP √ √
NOTE: The images under PBP will be displayed at the center
of the screen, not full screen.
62 | Operating the monitor
Icon Menu and
Description
Submenus
PIP/PBP Mode Adjusts the PIP or PBP (Picture by Picture) mode.
You can disable this feature by selecting Off.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
PIP/PBP Mode O
Exit
Operating the monitor | 63
Icon Menu and
Description
Submenus
PIP/PBP (Sub) Select between the different video signals that may be
connected to your monitor for the PBP sub-window. Press
the button to select the PBP sub-window source signal.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
PIP/PBP Mode
PIP/PBP (Sub)
USB Switch
Video Swap
Audio
Contrast (Sub)
USB-C 90W
DP
HDMI
USB Switch Select to switch between the USB upstream sources in PBP
mode. Move the joystick to switch among USB upstream
sources in PBP mode.
Video Swap Select to swap videos between main window and sub-
window in PBP mode. Move the joystick to swap main
window and sub-window.
Audio Allows you to set the audio source from the main window or
the sub-window.
Contrast (Sub) Adjust the Contrast level of the picture in PBP Mode.
Move the joystick to increase or decrease the contrast.
Exit
64 | Operating the monitor
Icon Menu and
Description
Submenus
USB Allows you to set the USB upstream port for the DP input
signals, thus the monitor’s USB downstream port (For
example, keyboard and mouse) can be used by the current
input signals when you connect a computer to either one of
the upstream ports. When you use only one upstream port,
the connected upstream port is active.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
DP assign to
HDMI assign to
Acher guide cong KVM
USB-C 2
USB-C 2
Select
NOTE: To prevent data damage or loss, before changing
USB upstream ports, make sure that no USB storage devices
are in use by the computer connected to the monitor’s USB
upstream port.
Show KVM
Setup Guide
Select this option and follow steps if you want to connect
multiple computers to the monitor and use one setup of
keyboard and mouse.
Exit
Operating the monitor | 65
Icon Menu and
Description
Submenus
Menu Select this option to adjust the settings of the OSD, such
as the languages of the OSD, the amount of time the menu
remains on screen, and so on.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Language
Rotation
Reset Menu
English
Select
20Transparency
20sTimer
DisableLock
Language Set the OSD display to one of eight languages.
(English, Spanish, French, German, Brazilian Portuguese,
Russian, Simplified Chinese, or Japanese).
Rotation Rotates the OSD by 0/90/270 degrees.
You can press the joystick to rotate each time.
Transparency Select this option to change the menu transparency by
moving the joystick up or down (Range: 0 - 100).
Timer OSD Hold Time: Sets the length of time the OSD remains
active after you press a button.
Move the joystick to adjust the slider in 1-second increments,
from 5 to 60 seconds.
Exit
66 | Operating the monitor
Icon Menu and
Description
Submenus
Lock With the control buttons on the monitor locked, you can
prevent people from accessing the controls. It also prevents
accidental activation in multiple monitors side-by-side setup.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Language
Rotation
Transparency
Timer
Lock
Reset Menu
Menu Buttons
Power Button
Menu + Power Buttons
Disable
•Menu Buttons: Through OSD to lock the Menu buttons.
•Power Button: Through OSD to lock the Power button.
•Menu + Power Buttons: Through OSD to lock the all of
Menu and Power buttons.
•Disable: Move the joystick left and hold for 4 seconds.
Reset Menu Resets all settings under the Reset Menu to the factory
defaults.
Press to select this function.
Personalize
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Shortcut Key 1
Shortcut Key 2
Shortcut Key 3
Shortcut Key 4
Shortcut Key 5
Power Button LED
USB-C Charging 90W
Other USB Charging
Reset Personalization
USB Switch
Input Source
Preset Modes
Brightness/Contrast
Mode PIP/PBP
On in On Mode
O in O Mode
O in Standby Mode
Exit
Exit
Operating the monitor | 67
Icon Menu and
Submenus
Shortcut key 1
Shortcut key 2
Shortcut key 3
Shortcut key 4
Shortcut key 5
Power Button
LED
USB-C Charging
90W
Other USB
Charging
Reset
Personalization
Description
Select from Preset Modes, Brightness/Contrast, Input
Source, Aspect Ratio, Rotation, PIP/PBP Mode, USB
Switch Video Swap, Display Info set as shortcut key.
Allows you to set the state of the power light to save energy.
Allows you to enable or disable USB-C Charging 90W
charging function during monitor power off mode.
NOTE: When this function is enabled, you will be able to
charge your notebook or mobile devices through the USB-C
cable even when the monitor is powered Off.
Allows you to enable or disable Other USB Charging
function during monitor Standby Mode.
NOTE: When this function is enabled, you will be able to
charge your mobile phone through the USB-A cable even
when the monitor is in standby mode.
Resets all settings under the Personalize menu to the
factory preset values.
Press to select this function.
68 | Operating the monitor
Icon Menu and
Description
Submenus
Others Select this option to adjust the OSD settings suchas the
DDC/CI, LCD conditioning, and so on.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Display Info
DDC/CI On
LCD Conditioning
Firmware M3T101
Service Tag CN073K0
Self-Diagnostics Select
Reset Others
Factory Reset
Select
O
ENERGY STAR
®
Display Info Displays the monitor’s current settings.
Press to select this function.
UltraSharp 30 Monitor
Exit
Input Source:
Resolution:
USB:
Steeam Info
USB Upstream:
Model:
Firmware:
Service Tag:
USB-C
2560 x 1600, 60 Hz 24-bit
3.1
5.4Gbps
USB-C1
U3023E
M3T101
CN073K0
Operating the monitor | 69
Icon Menu and
Description
Submenus
DDC/CI DDC/CI (Display Data Channel/Command Interface) allows
your monitor parameters (brightness, color balance, and
etc.) to be adjustable via the software on your computer. You
can disable this feature by selecting Off. Enable this feature
for best user experience and optimum performance of your
monitor.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Display Info
DDC/CI
LCD Conditioning
Firmware
Service Tag
Self-Diagnostics
Reset Others
Factory Reset
On
O
Exit
LCD
Conditioning
Helps reduce minor cases of image retention. Depending on
the degree of image retention, the program may take some
time to run. You can enable this feature by selecting On.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Display Info
DDC/CI
LCD Conditioning
Firmware
Service Tag
Self-Diagnostics
Reset Others
Factory Reset
On
O
Firmware Displays the Firmware version of your monitor.
Exit
70 | Operating the monitor
Icon Menu and
Description
Submenus
Service Tag Displays the Service Tag. The Service Tag is a unique
alphanumeric identifier that allows Dell to identify the product
specifications and access warranty information.
NOTE: The Service Tag is also printed on a label located at
the back of the cover.
SelfDiagnostics
Use this option to run the built-in diagnostics, see Built-in
diagnostics.
Reset Others Resets all settings under the Others menu to the factory
defaults.
Press to select this function.
Factory Reset Restores all preset values to the factory default settings.
These are also the settings for ENERGY STAR® tests.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Display Info
DDC/CI
LCD Conditioning
Firmware
Service Tag
Self-Diagnostics
Reset Others
Factory Reset
Select
On
O
M3T101
CN073K0
Select
ENERGY STAR
®
Exit
Operating the monitor | 71
Using the OSD lock function
You can lock the front-panel control buttons to prevent access to the OSD menu and/
or power button.
Use the lock menu to lock the button(s).
1. Select one of the following options.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
The following message appears.
Are you sure you want to lock the Menu Buttons?
2. Select Ye s to lock buttons. Once locked, pressing any control button will display
the lock icon .
Language
Rotation
Transparency
Timer
Lock
Reset Menu
To unlock the Button, refer to the User’s Guide.
Yes
No
Menu Buttons
Power Button
Menu + Power Buttons
Disable
Exit
72 | Operating the monitor
Use the joystick to lock the button(s).
Press the left directional navigation of joystick for four seconds, a menu appears on the
screen.
Select Option:
Select one of the following options:
Options Description
1
Select this option to lock OSD menu function.
Menu button lock
2
Use this option to lock power button. This will
prevent the user to turn off the monitor using the
power button.
Power button lock
3
Use this option to lock OSD menu and power
button to turn off the monitor.
Menu and power button
lock
Operating the monitor | 73
To unlock the button(s).
Press the left directional navigation of joystick for four seconds until a menu appears
on the screen. The following table describes the options to unlock the front-panel
control buttons.
Select Option:
Options Description
1
Use this option to unlock OSD menu function.
Menu button unlock
2
Use this option to unlock power button to turn off
the monitor.
Power button unlock
3
Menu and power button
unlock
74 | Operating the monitor
Use this option to unlock OSD menu and power
button to turn off the monitor.
Initial setup
Select OSD items of Factory Reset in Other feature, the following message will
appear:
Are you sure you want to reset to default settings?
Yes
No
When you select ‘Yes ‘ to reset to default settings, the following message will appear:
UltraSharp 30 Monitor
Select ‘Yes’ to enable the following function(s):
.
Always on USB-C Charging.
.
Other USB Charging
Yes
No
When ‘Yes’ is selected, power consumption
will increase. When ‘No’ is selected,
It will comply with ENERGY STAR requirements.
Individual settings can be changed in the Menu.
Operating the monitor | 75
OSD warning messages
No DP Signal form your device.
Press any key on the keyboard to wake up.
If there is no display, press monitor joystick to open up the
Menu and select the correct input source.
When the monitor does not support a particular resolution mode, you can see the
following message:
The current input timing is not supported by the monitor display.
Please change your input timing to 2560x1600, 60Hz or any other
monitor listed timing as per monitor specications.
This means that the monitor cannot synchronize with the signal that it is receiving
from the computer. See Monitor specifications for the Horizontal and Vertical
frequency ranges addressable by this monitor. Recommended mode is 2560 x 1600.
You can see the following message before the DDC/CI function is disabled:
The function of adjusting display setting using PC application will be
Do you wish to disable DDC/CI function?
When the monitor enters the Standby Mode, the following message will appear:
disabled.
Yes
No
Going into Standby mode...
Activate the computer and wake up the monitor to gain access to the OSD.
If you press any button other than the power button, the following messages will
appear depending on the selected input:
76 | Operating the monitor
A message is displayed while the cable supporting DP alternate mode is connected to
the monitor under the following conditions:
• When Auto Select for USB-C is set to Prompt for Multiple Inputs.
• When the USB-C cable is connected to the monitor.
Switch to USB-C Video Input:
Yes
No
If the monitor connect with two ports or more, when the Auto of Input Source is
selected, it will turn to the next port with signal.
Auto
USB-C 90W
DP HDMI
Exit
Select OSD items of On in Standby Mode in Personalize feature, the following
message will appear:
Changing to this setting ( without symbol) will increase
power consumption. Do you want to continue?
Yes
No
If adjust the Brightness level above the default level over 75%, the following message
will appear:
Adjusting to this value will increase power consumpiton above the
default level. Do you want to continue?
Yes
No
• When user selects “Yes”, the power message is displayed only once.
• When user select ‘No’, the power warning message will pop-up again.
• The power warning message will appear again only when the user does a Factory
Reset from the OSD menu.
Operating the monitor | 77
If either DP, HDMI or USB-C input is selected and the corresponding cable is not
connected, a floating dialog box as shown below appears.
No DP Cable
The display will go into Standby Mode in 4 minutes.
www.dell.com/U3023E
or
No HDMI Cable
The display will go into Standby Mode in 4 minutes.
www.dell.com/U3023E
or
No USB-C Cable
The display will go into Standby Mode in 4 minutes.
www.dell.com/U3023E
For more information, see Troubleshooting.
78 | Operating the monitor
Setting the maximum resolution
To set the maximum resolution for the monitor:
In Windows 7, Windows 8 or Windows 8.1:
1. For Windows 8 or Windows 8.1 only, select the Desktop tile to switch to classic
desktop. For Windows Vista and Windows 7, skip this step.
2. Right-click on the desktop and click Screen Resolution.
3. Click the Dropdown list of the Screen Resolution and select 2560 x 1600.
4. Click OK.
In Windows 10 or Windows 11:
1. Right-click on the desktop and click Display Settings.
2. Click Advanced display settings.
3. Click the dropdown list of Resolution and select 2560 x 1600.
4. Click Apply.
If you do not see 2560 x 1600 as an option, you may need to update your graphics
driver. Depending on your computer, complete one of the following procedures:
If you have a Dell desktop or portable computer:
• Go to https://www.dell.com/support, enter your service tag, and download
the latest driver for your graphics card.
If you are using a non-Dell computer (laptop or desktop):
• Go to your computer manufacturer’s support website and download the latest
graphic drivers.
• Go to your graphics card manufacturer’s website and download the latest graphic
drivers.
Operating the monitor | 79
Multi-Monitor Sync (MMS)
Multi-Monitor Sync allows multiple monitors that are daisy chained via DisplayPort to
synchronize a pre-defined group of OSD settings in the background.
An OSD option, Multi-Monitor Sync is available in Display Menu to allow user to
enable/disable syncing.
NOTE: MMS is not supported over HDMI interface.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
If Monitor 2 supports Multi-Monitor Sync, its MMS option will automatically be set to
On for syncing as well.
If syncing of OSD settings across monitors is not preferred, this feature can be disabled
by setting MMS option of any of the monitor to Off.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Aspect Ratio
Sharpness
Response Time
MST
USB-C Prioritization
Multi-Monitor Sync
Reset Display
Aspect Ratio
Sharpness
Response Time
MST
USB-C Prioritization
Multi-Monitor Sync
Reset Display
On
O
Exit
On
O
80 | Operating the monitor
Exit
OSD Settings to be synchronized
• Brightness
• Contrast
• Preset Modes
• Color Temperature
• Custom Color (RGB Gain)
• Hue (Movie, Game mode)
• Saturation (Movie, Game mode)
• Response Time
• Sharpness
Setting Multi-Monitor Sync (MMS)
During initial power on or connection of new monitor, user setting synchronization only
start if MMS is On. All monitor should synchronize settings from Monitor 1.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Aspect Ratio
Sharpness
Response Time
MST
USB-C Prioritization
Multi-Monitor Sync
Reset Display
On
O
Exit
After first synchronization, subsequent syncing is driven by changes to the predefined
group of OSD settings from any node in the chain. Any node may initiate the changes
downstream and upstream.
MMS (On)
PC
Monitor 2 Monitor 3Monitor 1
Operating the monitor | 81
Troubleshooting
WARNING: Before you begin any of the procedures in this section, follow
the Safety instructions.
Self-test
Your monitor provides a self-test feature that allows you to check whether your
monitor is functioning properly. If your monitor and computer are properly connected
but the monitor screen remains dark, run the monitor self-test by performing the
following steps:
1. Turn o both your computer and the monitor.
2. Unplug the video cable from the back of the computer. To ensure proper Self-test
operation, remove all digital and the analog cables from the back of computer.
3. Turn on the monitor.
The floating dialog box should appear on-screen (against a black background), if the
monitor cannot sense a video signal and is working correctly. While in self-test mode,
the power LED remains white. Also, depending upon the selected input, one of the
dialogs shown below will continuously scroll through the screen.
No DP Cable
The display will go into Standby Mode in 4 minutes.
www.dell.com/U3023E
82 | Troubleshooting
or
No HDMI Cable
The display will go into Standby Mode in 4 minutes.
www.dell.com/U3023E
or
No USB-C Cable
The display will go into Standby Mode in 4 minutes.
www.dell.com/U3023E
4. This box also appears during normal system operation if the video cable becomes
disconnected or damaged.
5. Turn o your monitor and reconnect the video cable; then turn on both your
computer and the monitor.
If your monitor screen remains blank after you use the previous procedure, check your
video controller and computer, because your monitor is functioning properly.
Built-in diagnostics
Your monitor has a built-in diagnostic tool that helps you determine if the screen
abnormality you are experiencing is an inherent problem with your monitor, or with your
computer and video card.
UltraSharp 30 Monitor
Brightness/Contrast
Input Source
Color
Display
PIP/PBP
USB
Menu
Personalize
Others
Display Info
DDC/CI On
LCD Conditioning
Firmware M3T101
Service Tag CN073K0
Self-Diagnostics Select
Reset Others
Factory Reset
To Run the Built-in diagnostics:
1. Ensure that the screen is clean (no dust particles on the surface of the screen).
2. Select OSD items of Self-Diagnostics in Others feature.
3. Press the joystick button to start the diagnostics. A gray screen is displayed.
4. Observe if the screen has any defects or abnormalities.
5. Toggle the joystick once again until a red screen is displayed.
6. Observe if the screen has any defects or abnormalities.
7. Repeat steps 5 and 6 until the screen displays green, blue, black, and white
colors. Note any abnormalities or defects.
The test is complete when a text screen is displayed. To exit, toggle the joystick control
again.
If you do not detect any screen abnormalities upon using the built-in diagnostic tool,
the monitor is functioning properly. Check the video card and computer.
Select
O
ENERGY STAR
®
Exit
Troubleshooting | 83
Common problems
The following table contains general information about common monitor problems you
might encounter and the possible solutions:
Common
symptoms
No Video/
Power LED off
No Video/
Power LED on
Missing Pixels LCD screen has
Stuck-on Pixels LCD screen has
Brightness
Problems
Safety Related
Issues
What you
experience
No picture •Ensure that the video cable connecting the
No picture or no
brightness
spots
bright spots
Picture too dim
or too bright
Visible signs of
smoke or sparks
Possible solutions
monitor and the computer is properly connected
and secure.
•Verify that the power outlet is functioning
properly using any other electrical equipment.
•Ensure that the power button is depressed fully.
•Ensure that the correct input source is selected
in the Input Source menu.
•Increase brightness and contrast controls via
OSD.
•Perform monitor self-test feature check.
•Check for bent or broken pins in the video cable
connector.
•Run the built-in diagnostics.
•Ensure that the correct input source is selected
in the Input Source menu.
•Cyclepoweron-off.
•Pixelthatispermanentlyoffisanaturaldefect
that can occur in LCD technology.
•FormoreinformationonDellMonitorQualityand
Pixel Policy, see Dell Support site at:
https://www.dell.com/pixelguidelines.
•CyclepowerOn-Off.
•Pixelthatispermanentlyoffisanaturaldefect
that can occur in LCD technology.
•FormoreinformationonDellMonitorQualityand
PixelPolicy, see Dell Support site at:
https://www.dell.com/pixelguidelines.
•Reset the monitor to factory settings.
•Adjust brightness and contrast controls via OSD.
•Do not perform any troubleshooting steps.
•Contact Dell immediately.
84 | Troubleshooting
Common
symptoms
Intermittent
Problems
Missing Color Picture missing
Wrong Color Picture color
Image retention
from a static
image left on
the monitor for
a long period of
time
What you
experience
Monitor
malfunctions on
& off
color
not good
Faint shadow
from the static
image displayed
appears on the
screen
Possible solutions
•Ensure that the video cable connecting the
monitor to the computer is connected properly
and is secure.
•Resetthemonitortofactorysettings.
•Perform monitor self-test feature check to
determine if the intermittent problem occurs in
self-test mode.
•Perform monitor self-test.
•Ensure that the video cable connecting the
monitor to the computer is connected properly
and is secure.
•Check for bent or broken pins in the video cable
connector.
•Try dierent Preset Modes in Color settings
OSD.
•Adjust R/G/B value under Custom Color in Color
menu OSD.
•Change the Input Color Format to RGB or
YCbCr in the Color settings OSD.
•Run the built-in diagnostics.
•Set the screen to turn o after a few minutes
of screen idle time. These can be adjusted in
Windows Power Options or Mac Energy Saver
setting.
•Alternatively, use a dynamically changing
screensaver.
Troubleshooting | 85
Product specific problems
Problem What you
experience
Screen image is
too small
Cannot adjust
the monitor
with the
buttons on the
front panel
No Input Signal
when user
controls are
pressed
The picture
does not fill the
entire screen
No image
when using DP
connection to
the PC
Image is
centered on
screen, but
does not fill
entire viewing
area
OSD does not
appear on the
screen
No picture, the
LED light is
white
The picture
cannot fill the
height or width
of the screen
Black screen •Verify which DP standard (DP 1.1a or DP 1.4) is
Possible solutions
•Check the Aspect Ratio setting in the Display
menu OSD.
•Reset the monitor to factory settings.
•Turn o the monitor, unplug the monitor power
cable, plug it back, and then turn on the monitor.
•Check the signal source. Ensure the computer
is not in the power saving mode by moving the
mouse or pressing any key on the keyboard.
•Check whether the signal cable is plugged
in properly. Connect the signal cable again, if
necessary.
•Reset the computer or video player.
•Due to dierent video formats (aspect ratio) of
DVDs, the monitor may display in full screen.
•Run the built-in diagnostics.
your Graphics Card certied to. Download and
install the latest graphics card driver.
•Some DP 1.1a graphics card cannot support
DP 1.4 monitors. Go to OSD menu, under Input
Source selection, press and hold DP select
joystick key for 8 seconds to change the monitor
setting from DP 1.4 to DP 1.1a.
86 | Troubleshooting
Problem What you
experience
No image when
using USB-C
connection
to computer,
laptop, and so
on
No charging
when using
USB-C
connection
to computer,
laptop, and so
on
Intermittent
charging when
using USB-C
connection to
computer,
laptop, and so
on
No image when
using USB-C
MST
No network
connection
Black screen •Verify if the USB-C interface of the device can
No charging •Verify if the device can support one of 5 V/9 V/
Intermittent
charging
Black screen or
2nd DUT is not
Prime mode
Network
dropped or
Intermittent
Possible solutions
support DP alternate mode.
•Verify if the device required more than 90 W
power charging.
•USB-C interface of device cannot support DP
alternate mode.
•Set Windows to Projection mode.
•Ensure that the USB-C cable is not damaged.
15 V/20 V charging proles.
•Verify if the Notebook requires a >90 W power
adaptor.
•If the Notebook requires a >90 W power
adaptor, it may not charge with the USB-C
connection.
•Ensure that you use only Dell approved adapter
or the adapter that comes with the product.
•Ensure that the USB-C cable is not damaged.
•Check if the maximum power consumption of
device is over 90 W.
•Ensure that you use only Dell approved adapter
or the adapter that comes with the product.
•Ensure that the USB-C cable is not damaged.
•USB-C input, Go to OSD menu, under Display
Info check the Link Rate is HBR2 or HBR3, if
Link Rate is HBR2, suggest to use USB-C to DP
cable to turn on MST.
•Do not toggle O/On the power button when
network is connected, keeps the power button
On.
Troubleshooting | 87
Problem What you
experience
The LAN port is
not functioning
U3023E cannot
set to 2560 x
1600 @ 60Hz
in Daisy chain
mode in DP1.2
(DSC Disable)
U3023E
connected as
3rd monitor
cannot set to
2560 x 1600 @
60Hz in Daisy
chain mode in
DP1.4 (DSC
Disable)
OS setting
or cable
connection
issue
2nd monitor
displayed image
cannot set at
2560 x 1600
@ 60Hz when
set MST On
and USB-C
Prioritization
(High Data
Speed)
3rd monitor
displayed image
cannot set at
2560 x 1600
@ 60Hz when
set MST On
and USB-C
Prioritization
(High Data
Speed)
Possible solutions
•Ensure that the latest BIOS and drivers for your
computer are installed on your computer.
•Ensure that the RealTek Gigabit Ethernet
Controller is installed in the Windows Device
Manager.
•If your BIOS Setup has a LAN/GBE Enabled/
Disabled option, make sure it is set to Enabled.
•Ensure that the Ethernet cable is connected
securely on the monitor and the hub/router/
rewall.
•Check the status LED of the Ethernet cable to
conrm connectivity. Re-connect both ends of
the Ethernet cable if the LED is not lit.
•First power o the Computer and unplug the
Type-C cable and power cord of the monitor.
Then, power on the computer, plug in the
monitor power cord and Type-C cable.
•Switch USB-C Prioritization from High Data
Speed to High Resolution. (USB speed reduce
to 2.0)
•Switch PC that supported DP1.4
•Switch USB-C Prioritization from High Data
Speed to High Resolution. (USB speed reduce
to 2.0)
88 | Troubleshooting
Problem What you
experience
U3023E
connected as
3rd monitors
displayed
image at lower
resolution in
DP1.4 (DSC
Enable)
2nd monitor
(U3023E) no
displayed image
when 1st monitor
(non-DSC)
connected
to Discrete
Graphic Card
(E.g Nvidia)
with DSC
Enable
U3023E as 2nd
monitor cannot
display 2560
x 1600 image
when 1st monitor
(non-DSC)
connected to
Intel Graphic
Card with DP1.4
(DSC Enable)
Three U3023E
monitors
connected in
daisy chain,
3rd displayed
image at lower
resolution when
set MST On
and USB-C
Prioritization
(High Data
Speed)
Two monitors
connected in
Daisy chain,
2nd monitor
U3023E no
displayed image
when set MST
On and USB-C
Prioritization
(High Data
Speed)
Two monitors
connected in
Daisy chain,
2nd monitor
U3023E cannot
displayed 2560
x 1600 image
when set MST
On and USB-C
Prioritization
(High Data
Speed)
Possible solutions
•Press “Windows” + “P” key, select “second
screen only”
•Goto Display setting, select 2560 x 1600
•Connect U3023E as 1st Monitor
•Connect U3023E as 1st Monitor
Troubleshooting | 89
Problem What you
experience
OSD lagging
when navigating
menu
OSD no
response
Can’t adjust
Brightness/
Contrast
through
Dell Display
Manager
(DDM)
U3023E as
2nd monitor
no displayed
image when 1st
monitor with
USB-C cable
connected
to Nvidia
Graphic Card
(DSC Enable)
with Salomon
docking
2 or 3 monitors
connected in
daisy chain
when MMS
is On, OSD
lagging during
menu navigation
2 or 3 monitors
connected in
daisy chain
when MMS is
On, no OSD
response during
menu navigation
response during
menu navigation
2 or 3 monitors
connected in
daisy chain
when MMS
is On, some
functions of
the 2nd or 3rd
monitors may
not work on
DDM
Two monitors
connected in
Daisy chain,
2nd monitor
U3023E no
displayed image
when set MST
On and USB-C
Prioritization
(High Data
Speed)
Possible solutions
•Set Multi-Monitor Sync (MMS) turn o
•Or Slow the OSD navigating speed to 1 second
•Set Multi-Monitor Sync (MMS) turn o
•Set Multi-Monitor Sync (MMS) turn o
•Or adjust Brightness/contrast through OSD
•In the BIOS menu set to disable” discrete
graphics controller direct output mode”
•Without docking
90 | Troubleshooting
Problem What you
experience
U3023E
connected as
2nd monitor
cannot set to
2560 x 1600 @
60Hz in Daisy
chain mode in
DP1.4 (DSC
Disable)
3x U3023E
connected in
MST mode
encountered
flicker issue
1st monitor
(Non DSC)
connected
2nd monitor
U3023E (DSC)
cannot reach
native resolution
for 2nd monitor
Ethernet not
working
Two monitors
connected in
Daisy chain, 1st
monitor(nonDSC) and
2nd monitor
U3023E cannot
set to 2560 x
1600 @ 60Hz
when set MST
On and USB-C
Prioritization
(High
Resolution)
3x U3023E
connected in
MST mode
encountered
flicker issue for
1 second during
Shutdown,
Reboot,
Unplug/plug,
Sleep & Wakeup
1st monitor
(Non DSC)
connected
2nd monitor
U3023E (DSC)
cannot reach
native resolution
for 2nd monitor
Ethernet not
connected
Possible solutions
•Connect U3023E as 1st Monitor
•Intel Graphic card driver limitation
•Intel Graphic card driver limitation
•Connect U3023E as 1st Monitor
•Install Ethernet Driver 10.45.20.
Troubleshooting | 91
Problem What you
experience
3 Soundbar
unit not
working when
connected
to 3 U3023E
monitor
3 soundbars
unit connected
individually
to 3 U3023E
monitor,
soundbar not
working via DP/
HDMI
3x U3023E
connected in
MST mode DSC
disable and High
Data Speed
encountered
hang five
minutes issue
Three monitors
connected in
Daisy chain,
st
1
monitor
connect USB-C
cable with
platform and 2nd
and 3rd monitor
with DP cable
when set MST
On and USB-C
Prioritization
(High Data
Speed) and
DSC Disable
Restart
platform or
unplug and plug
USB-C cable
encounter hang
five minutes
issue
Possible solutions
•USB Topology limitation to 2.
•Connect 2 soundbar unit individually to 2
U3023E monitor
•Connect 2 U3023E monitor at DSC disable and
USB-C Prioritization switch to High Data Speed,
Or
•Connect 3 U3023E monitor at DSC disable and
USB-C Prioritization switch to High Resolution
92 | Troubleshooting
Universal Serial Bus (USB) specific problems
Specific
symptoms
USB interface is
not working
Super speed
USB 3.2 Gen2
interface is
slow.
Wireless USB
peripherals stop
working when a
USB 3.0 device
is plugged in
USB is not
working
What you
experience
USB peripherals
are not working
Super speed
USB 3.2 Gen2
peripherals
working slowly
or not working
at all
Wireless USB
peripherals
responding
slowly or only
working as
the distance
between itself
and its receiver
decreases
No USB
functionalities
Possible solutions
•Check that your display is turned ON.
•Reconnect the upstream cable to your
computer.
•Reconnect the USB peripherals (downstream
connector).
•Turn o the monitor and turn it on again.
•Reboot the computer.
•Certain USB devices such as portable hard
drives require higher power source; connect the
drive to the computer directly.
•Check that your computer is USB 3.0-capable.
•Some computers have USB 3.0, USB 2.0, and
USB 1.1 ports. Ensure that the correct USB port
is used.
•Reconnect the upstream cable to your
computer.
•Reconnect the USB peripherals (downstream
connector).
•Reboot the computer.
•Increase the distance between the USB 3.0
peripherals and the wireless USB receiver.
•Position your wireless USB receiver as close as
possible to the wireless USB peripherals.
•Use a USB-extender cable to position the
wireless USB receiver as far away as possible
from the USB 3.0 port.
Refer to input source and USB pairing table.
Troubleshooting | 93
Appendix
FCC notices (U.S. Only) and other regulatory information
For FCC notices and other regulatory information, see the regulatory compliance at
https://www.dell.com/regulatory_compliance.
Contacting Dell
For customers in the United States, call 800-WWW-DELL (800-999-3355).
NOTE: If you do not have an active Internet connection, you can find
contact information on your purchase invoice, packing slip, bill, or Dell
product catalog.
Dell provides several online and telephone-based support and service options.
Availability varies by country and product, and some services may not be available in
your area.
To get online monitor support content:
See https://www.dell.com/support/monitors.
To contact Dell for sales, technical support, or customer service issues:
1. Go to https://www.dell.com/support.
2. Verify your country or region in the Choose A Country/Region drop-down menu
at the bottom-right corner of the page.
3. Click Contact Us next to the country dropdown.
4. Select the appropriate service or support link based on your need.
5. Choose the method of contacting Dell that is convenient for you.
EU product database for energy label and product information sheet
U3023E: https://eprel.ec.europa.eu/qr/928122
94 | Appendix
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