Dell Precision 5750

External Display Connection Guide

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

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CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

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WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

Contents

Chapter 1: Before you begin.....4
Check the graphics options on your computer.....4
Modes of connection.....4
Enable Direct Graphics Controller Direct Output mode.....5
Turn off the internal display.....5

Chapter 2: Connect external displays.....7
Integrated graphics.....7
Discrete graphics.....10

Chapter 3: Troubleshooting.....12

Chapter 4: Getting help.....13
Contacting Dell.....13

Before you begin

You can connect up to four 4K external displays or two 5K and above displays using the Thunderbolt 3 (USB-C) ports available on your Precision 5750.

Before you begin, ensure that you:

• Check the graphics options on your computer

• Check the ports available on your external displays and decide on the mode of connection.

Check the graphics options on your computer

The number of external displays supported depends on the type of graphics card available on your computer.

NOTE: On computers with the NVIDIA Quadro RTX3000 graphics card installed, you can connect up to four external displays or two 8K displays by enabling the Direct Graphics Controller Direct Output Mode in the BIOS. For more information on enabling this mode, see Enabling Direct Graphics Controller Direct Output Mode.

For more information on 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 UHD Graphics 630/P630 (Integrated graphics)

NVIDIA Quadro T2000 (Discrete graphics)

NVIDIA Quadro RTX3000 (Discrete graphics)

Modes of connection

Depending on the connectors available on your external display, you can connect the displays to the Thunderbolt 3 (USB-C) ports on your computer using:

Thunderbolt 3 cables, adapters or docking stations

USB-C cables, adapters or docking stations

NOTE: To experience the full resolution supported by your external displays, use appropriate cables. For example, use DisplayPort or HDMI cables for 4K and above resolution.

NOTE: USB-C or Thunderbolt docking stations can be used to connect external displays to the computer using a single USB-C cable, while charging the computer. For more information about the types of docking stations available from Dell, see the knowledge base article SLN286158 at www.dell.com/support.

NOTE: USB-C adapters can also be used to connect external displays to the computer, though these do not allow power charging at the same time. For more information about the types of USB-C adapters available from Dell, see the knowledge base article SLN301080 at www.dell.com/support.

These are the Thunderbolt 3 (USB-C) ports available on your computer:

NOTE: When connecting a display indirectly using a adapter or docking station, it is recommended that you connect the display to the docking station first, then connect the docking station to the Thunderbolt 3 (USB-C) port on your computer.

NOTE: The devices connected to the ports on the left side of the computer have priority over the ports on the right. While connecting external displays, it is recommended that you connect the displays to the left ports.

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Enable Direct Graphics Controller Direct Output mode

You can connect four external displays or two 8K displays on computers with the NVIDIA Quadro RTX3000 discrete graphics card installed, you must enable Direct Graphics Controller Direct Output Mode in the computer's BIOS.

NOTE: When enabled, the graphics signals are sent to the external display using the discrete graphics card instead of integrated graphics. By default, this mode is disabled in the computer's BIOS.

To change Direct Graphics Controller Direct Output Mode in the