How many external displays can I connect to the TBT4-UDX1?

Last Update: October 3rd, 2023
Article ID: 2080980

The TBT4-UDX1 is a Thunderbolt 4 docking station based on the Intel Goshen Ridge chipset. The display output capabilities of the TBT4-UDX1 are ultimately determined by the display output capabilities of the host system.

Thunderbolt 4 host system:

When the TBT4-UDX1 is connected to a computer with a Thunderbolt 4 port, the maximum number of displays that can be connected to the docking station is two.  

The TBT4-UDX1 has a built-in HDMI video output port, and two downstream Thunderbolt ports.

We include in the box with the TBT4-UDX1 a Plugable USB Type-C to HDMI adapter that can be connected to one of the docking stations downstream Thunderbolt ports.  

The video outputs via the TBT4-UDX1 are provided on a ‘first come, first served’ basis.  To expand further, if the dock’s built-in HDMI video output is in use, you can connect one additional display via a USB Type-C to video adapter.

If there are two USB Type-C video adapters connected to the dock’s downstream Thunderbolt ports, then the HDMI video output will not function.

Thunderbolt 3 host system:

Manufacturers have discretion when designing their Thunderbolt 3 systems in regard to how many displays are supported via a single Thunderbolt 3 port.  Some Thunderbolt 3 systems support two displays, while other Thunderbolt 3 systems will only support one display.

The same ‘first come, first served’ process described previously within the ‘Thunderbolt 4 host system’ section will still apply if the host system supports two displays.

USB Type-C host system:

Host systems with only a USB Type-C port will be limited to a maximum of one display. This display can be connected to either the dock’s built-in HDMI video output port, or via the included USB Type-C to HDMI adapter.