Dell UltraSharp 43 User manual

Model: U4320Q
Regulatory model: U4320Qt
Dell UltraSharp 43
4K USB-C Monitor
User’s Guide

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 © 2019 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.
2019 – 12
Rev. A00

Contents
About Your Monitor .................................5
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Identifying Parts and Controls . . . . . . . . . . . . . . . . . . . . . . . . 7
Monitor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Plug-and-Play . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
LCD Monitor Quality and Pixel Policy . . . . . . . . . . . . . . . . . . . .20
Setting Up the Monitor .............................21
Attaching the Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Connecting Your Monitor. . . . . . . . . . . . . . . . . . . . . . . . . . .24
Organizing Your Cables . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Removing the Monitor Stand . . . . . . . . . . . . . . . . . . . . . . . .26
Wall Mounting (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Operating the Monitor ..............................28
Turning on the Monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Using the Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . .28
Using the OSD Lock function . . . . . . . . . . . . . . . . . . . . . . . .30
Using the On-Screen Display (OSD) Menu . . . . . . . . . . . . . . . . .33
Troubleshooting ...................................49
Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Built-in Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Contents | 3

4| Contents
PIP/PBP Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Common Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Product Specific Problems. . . . . . . . . . . . . . . . . . . . . . . . . .53
Appendix.........................................55
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
FCC Notices (U.S. only) and Other Regulatory Information . . . . . . . .55
Contacting Dell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Setting Up Your Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Maintenance Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . .58

About Your Monitor | 5
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.
Display
Stand riser
Stand base
Power cable (varies by country)
USB Type-C cable (C to C)
USB Type-C cable (C to A)

6| About Your Monitor
HDMI cable
DP cable
VESA Mounting kit
•Quick Setup Guide
•Safety, Environmental and
Regulatory Information
Product Features
The Dell UltraSharp U4320Q monitor has an active matrix, thinfilm transistor (TFT), liquid
crystal display (LCD), and LED backlight. The monitor features include:
• 107.975 cm (42.51 in.) active area display (Measured diagonally) 3840 x 2160 (16:9)
resolution, plus full-screen support for lower resolutions.
• Wide viewing angles with 96% sRGB color.
• Tilt, swivel and vertical extension adjustment capabilities.
• Built-in speakers (2 x 8 W) by New Sunlink.
• Removable pedestal and Video Electronics Standards Association (VESA™) 100 mm
and 200 mm mounting holes for flexible mounting solutions.
• Ultra-thin bezel minimizes the bezel gap in multi-monitor usage, enabling easier set up
with an elegant viewing experience.
• Extensive digital connectivity with HDMI and DP helps future-proof your monitor.
• Single USB Type-C to supply power to compatible notebook while receiving video
signal.
• 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.
• 0.5 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.

About Your Monitor | 7
Identifying Parts and Controls
Front view
1 2
Label Description
1Function buttons (For more information, see Operating the Monitor)
2Power on/off button (with LED indicator)

8| About Your Monitor
Back View
5
1
2
3
4
Label Description Use
1VESA mounting holes (100 mm x 100
mm and 200 mm x 200 mm-behind
attached VESA cover)
Wall mount monitor using VESA-
compatible wall mount kit (100 mm x 100
mm and 200 mm x 200 mm).
2Regulatory label Lists the regulatory approvals.
3Stand release button Release stand from monitor.
4Barcode, serial number, and Service
Tag label
Refer to this label if you need to contact Dell
for technical support.
5Cable management slot Use to organize cables by placing them
through the slot.
Side View
1
2
Label Description Use
1 USB downstream port Port with battery icon supports BC 1.2.
2 USB Type-C downstream port Port with icon supports 5 V/3 A.

About Your Monitor | 9
Bottom View
1 2 3 5 8 9
10
11 114 67
Label Description Use
1AC power port To connect the monitor power cable.
2Security lock slot Secures monitor with security cable lock (sold
separately).
3HDMI 1 port Connect your computer with HDMI cable.
4HDMI 2 port Connect your computer with HDMI cable.
5DP 1 port Connect your computer with DP cable.
6DP 2 port Connect your computer with DP cable.
7USB Type-C/DisplayPort Connect to your computer using the USB Type-C
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 3840 x 2160 at 60 Hz, PD* 20
V/4.5 A, 15 V/3 A, 9 V/3 A, 5 V/3 A.
*PD: Power Delivery.
NOTE: USB Type-C is not supported on Windows
versions that are prior to Windows 10.
8Audio line-out port Connect speakers to playback audio coming through
USB Type-C or DP or HDMI audio channels.
Only supports 2-channel audio.
NOTE: The audio line-out port does not support
headphones.
9USB Type-A ports (2) Connect your USB device.
Port with icon supports 5 V/0.9 A.
10 Stand lock Lock the stand to the monitor using a M3 x 6 mm
screw (screw not included).
11 Built-in speakers To output the sound from audio input.

10 | About Your Monitor
Monitor Specifications
Screen type Active matrix - TFT LCD
Panel Type In-plane switching Technology
Aspect ratio 16:9
Viewable image dimensions
Diagonal 1079.75 mm (42.51 in.)
Active Area
Horizontal 941.18 mm (37.0 5 in.)
Vertical 529.42 mm (20.84 in.)
Area 498279.5 mm2(772.12 in.2)
Pixel pitch 0.2451 mm x 0.2451 mm
Pixel per inch (PPI) 103.23
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) 5 ms (FAST mode)
8 ms (NORMAL mode)
Color depth 1.06 Billion colors
Color gamut* 96% sRGB
Connectivity Bottom view
•2 x HDMI2.0
•2 x DP 1.4 (HDCP 2.2)
•1 x USB Type-C (Alternate mode with DisplayPort 1.4,
USB 3.1 upstream port, Power Delivery PD up to 90 W)
•1 x Analog 2.0 audio line out (3.5 mm jack)
•2 x USB-A, USB 3.1 Gen 1 (5 Gbps)
Quick Access (Side view)
•1 x USB 3.1 with BC1.2 charging capability at 2 A (max)
•1 x USB Type-C Downstream (15 W), USB3.1 Gen 1 (5
Gbps)
Border width (edge of monitor
to active area)
13.0 mm (Top)
13.0 mm (Left/Right)
22.0 mm (Bottom)
Adjustability
Height adjustable stand 60 mm