Dell Thunderbolt Docks and Apple USB-C Hosts

Table of Contents:

1. Functionality
2. Limitations
3. Dual Monitor Setup
4. Support

Functionality

The WD19TBS dock with v1.0.14.1 update (which includes NVM43 firmware) and the WD22TB4 dock with 00.00.07.01 update (which includes NVM36 firmware) which Apple certifies. The known functionality provided by the dock when connected to an Apple USB-C host is outlined below.

Table 1. Apple USB Type-C dock functionality

*See the Dual Monitor Setup section below for more information about dual monitor connections through WD19TB, WD19TBS, or WD22TB4.

**Connection to the monitor should happen through DisplayPort (DP), High-Definition Multi-Media (HDMI), or USB-C port on the dock, not through the Thunderbolt port.

***See Apple support pages for the list of USB connections or devices supported by iPad Pro.

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Limitations

Below are some known functionality limitations when using a WD19TB, WD19TBS, or WD22TB4 Dock with Apple USB-C host computers. A comparison with Dell commercial laptops is shown to clearly bring out the limitations.

Table 2. WD19TB, WD19TBS, or WD22TB4 dock functionality comparison when connected to a Dell Commercial Notebook vs. Apple USB-C Host

*See the Dual Monitor Setup section below for more information about dual monitor connections through WD19TB, WD19TBS, and WD22TB4. Dual external monitor support is not available on MacBooks with the M1 or M2 chip due to a limitation of the chip. (This limitation excludes Max and Pro versions)

** WD19TBS and WD22TB4 are not equipped with 3.5 mm audio connections.

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Dual Monitor Setup

Use either of the ways that are shown in the figures below to connect two monitors in "Extended Desktop." This limitation is due to a lack of support for Multi-Stream Transport in macOS.

Figure 1. Dual Monitor Setup-1 with WD22TB4 dock that is connected to an Apple USB-C Host. Monitors are connected to the dock using a dual Thunderbolt connection.

Figure 2. Dual Monitor Setup-2 with WD19TB/WD19TBS/WD22TB4 dock that is connected to an Apple USB-C Host. Where the monitors are connected to the dock using Thunderbolt and DisplayPort, HDMI, or DisplayPort over USB Type-C connections.

• One monitor must be first connected using the DisplayPort port (DP, HDMI, USB-C port) and the other monitor must be connected using the Thunderbolt port on the dock.
• The displays are mirrored if both the monitors are connected using the DisplayPort on the dock (that is, DP and HDMI (or) DP and DP (or) DP and USB-C).

Figure 3. Dual Monitor Setup-2 with WD19TB, WD19TBS, or WD22TB4 dock that is connected to an Apple USB-C Host. The first monitor is connected to the dock using Thunderbolt and the second monitor is daisy-chained to the first.

*This setup uses daisy chaining with Thunderbolt monitors (Figure 3).

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Support

Dell Technical Support can troubleshoot when Dell docks are used with Dell computers but cannot troubleshoot when Dell docks are used with non-Dell computers. For non-Dell computer issues, contact the computer manufacturer. (For example: Here it is Apple.)

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Recommended Articles

Here are some recommended articles related to this topic that might be of interest to you.

• Industry Standard Compatibility with Dell USB Type-C and Thunderbolt Docks (WD22TB4, WD19, WD19S, WD19TB, and WD19TBS docking stations)
• Dell DisplayLink Docking Stations and macOS Support