Dell Vostro 5480 Instruction Manual

Precision 5480
External Display Connection Guide
Regulatory Model: P154G
Regulatory Type: P154G003
April 2023
Rev. A00

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid
the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
© 2023 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its
subsidiaries. Other trademarks may be trademarks of their respective owners.

Chapter 1: Before you begin.......................................................................................................... 4
Check the graphics options on your computer............................................................................................................ 4
Turn off the internal display.............................................................................................................................................. 4
Chapter 2: Connect displays..........................................................................................................5
Supported display................................................................................................................................................................ 5
Chapter 3: Troubleshooting........................................................................................................... 7
Chapter 4: Getting help and contacting Dell.................................................................................. 8
Contents
Contents 3

Before you begin
You can connect up to four 4K external displays or one 8K and above display using the four Thunderbolt 4 on your Precision
5480.
Total number of displays supported:
●Four 4K external displays: 4 ports (Thunderbolt 4)
●One 8K
Before you begin, ensure that you:
●Check the graphics options on your computer
Check the graphics options on your computer
The number of external displays that are supported depends on the type of graphics card available on your computer:
●The integrated graphics card can support a maximum of 4 displays.
●The hybrid graphics card can support a maximum of 4 displays.
NOTE:
●Dell Docking Station—WD19DCs display behavior follows the host the Thunderbolt 4 (USB Type-C) port.
●The HDMI 2.1 port and MFDC (MFDP) Type-C port on the WD19DCs docking station cannot support dual monitors
simultaneously.
For more information about the graphics card available on your computer, run Dell SupportAssist on your computer, or scan your
hardware at www.dell.com/support.
The following are the graphic options that may be installed in your computer:
●Intel Iris XeGraphics (Integrated graphics)
●NVIDIA RTX A1000 laptop GPU (Hybrid graphics)
●NVIDIA RTX 2000 Ada Generation laptop GPU (Hybrid graphics)
●NVIDIA RTX 3000 Ada Generation laptop GPU (Hybrid graphics)
Turn off the internal display
There may be instances where you may want to turn off the computer's internal display to connect more external displays.
You can turn off the LCD display of your computer by using the Intel HD Graphics Command Center.
To turn off the display:
1. In the Windows search bar, type Intel Graphics Command Center and press <Enter>.
2. Accept the Intel Graphics Command Center software licence agreement.
3. On the Intel Graphics Command Center window, click Display. The list of active displays is listed under the Connected
Displays section.
4. Click the ellipsis (...) in the top-right corner of your primary display, then click Extend > Display 2.
5. Click the ellipsis (...) in the top-right corner of display 2, then click Make Display Primary.
6. Click the ellipsis (...) in the top-right corner of your computer's display, then click Disable.
1
4 Before you begin

Connect displays
Depending on the connectors available on your external display, you can connect the displays to the Thunderbolt 4 (USB
Type-C) ports, HDMI port, Mini DisplayPort on your computer using:
●Thunderbolt 4 cables, adapters or docking stations
●USB Type-C cables. adapters or docking stations
●HDMI cables or adapters
●Mini DisplayPort cables or adapters
NOTE: To experience the full resolution supported by your external displays, use appropriate cables. For examples, use
DisplayPort or HDMI cables for 4K and above resolution.
Supported display
Table 1. Supported display via host display port under different modes
Graphics card mode Connect to external displays
One external display Two external displays Three external
displays
Four external
displays
UMA Thunderbolt 4: 7680 x
4320 @ 60 Hz
Thunderbolt 4:
●7680 x 4320 @ 60
Hz
●7680 x 4320 @ 60
Hz
Thunderbolt 4:
●7680 x 4320 @ 60
Hz
●4096 x 2304 @ 60
Hz
●4096 x 2304 @ 60
Hz
Thunderbolt 4:
●4096 x 2304 @ 60
Hz
●4096 x 2304 @ 60
Hz
●4096 x 2304 @ 60
Hz
●4096 x 2304 @ 60
Hz
Hybrid mode Thunderbolt 4: 7680 x
4320 @ 60 Hz
Thunderbolt 4:
●7680 x 4320 @ 60
Hz
●7680 x 4320 @ 60
Hz
Thunderbolt 4:
●7680 x 4320 @ 60
Hz
●4096 x 2304 @ 60
Hz
●4096 x 2304 @ 60
Hz
Thunderbolt 4:
●4096 x 2304 @ 60
Hz
●4096 x 2304 @ 60
Hz
●4096 x 2304 @ 60
Hz
●4096 x 2304 @ 60
Hz
*When connecting via docking station, additional external displays can be connected under Hybrid mode (with Internal Display
Off).
Table 2. Supported display via docking station under Hybrid mode
Hybrid mode
TBT Dock Type-C TBT + DP + DP + HDMI/MFDP: 4k@60 Hz + 2k@60
Hz*3
●Up to 3 if internal display
on
●Up to 4 if internal display
off
●Connect either HDMI
or MFDP only, do not
connect both of them
2
Connect displays 5

Table 2. Supported display via docking station under Hybrid mode (continued)
Hybrid mode
Single Cable Dock ●DP + DP + HDMI : FHD@60 Hz*3
●DP + DP + MFDP : FHD@60 Hz*3
Dual Cable Dock ●DP + DP + HDMI: 2k@60 Hz*3
●DP + DP + MFDP: 2k@60 Hz*3
6 Connect displays

Troubleshooting
Question
When I connect an 8K display using the USB Type-C to DisplayPort adapter, the monitor resolution is 4k.
Cause
This may be because of incorrect settings in the BIOS.
Workaround
Ensure BIOS setting is special graphics mode.
For more information about accessing and configuring the BIOS, see the computer's Service Manual at www.dell.com/support.
Question
When I connect an 8K display using the USB Type-C to DisplayPort adapter, the display resolution can reach to 8K, but refresh
rate cannot reach to 60Hz.
Workaround
Connect the 8K display with the dual USB Type-C to DisplayPort adapter or one USB Type-C to DisplayPort adapter + one Mini
DisplayPort.
Connect the 8K display with dual cable WD19DCs dock dual DisplayPort or Host dual USB Type-C to DisplayPort adapter or
Host DisplayPort adapter + one Mini DisplayPort.
3
Troubleshooting 7

Getting help and contacting Dell
Self-help resources
You can get information and help on Dell products and services using these self-help resources:
Table 3. Self-help resources
Self-help resources Resource location
Information about Dell products and services www.dell.com
My Dell app
Tips
Contact Support In Windows search, type Contact Support, and press
Enter.
Online help for operating system www.dell.com/support/windows
Access top solutions, diagnostics, drivers and downloads, and
learn more about your computer through videos, manuals and
documents.
Your Dell computer is uniquely identified by a Service Tag or
Express Service Code. To view relevant support resources for
your Dell computer, enter the Service Tag or Express Service
Code at www.dell.com/support.
For more information on how to find the Service Tag for your
computer, see Locate the Service Tag on your computer.
Dell knowledge base articles for a variety of computer
concerns
1. Go to www.dell.com/support.
2. On the menu bar at the top of the Support page, select
Support > Knowledge Base.
3. In the Search field on the Knowledge Base page, type the
keyword, topic, or model number, and then click or tap the
search icon to view the related articles.
Contacting Dell
To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell.
NOTE: Availability varies by country/region and product, and some services may not be available in your country/region.
NOTE: If you do not have an active Internet connection, you can find contact information about your purchase invoice,
packing slip, bill, or Dell product catalog.
4
8 Getting help and contacting Dell