Do the USB-C Ports on Plugable Thunderbolt 3 Docks Support Video Output?
It depends on the dock. The downstream USB-C ports on the TBT3-UDZ, TBT3-UDC3, and TBT3-UDC1 do not support video output, while the downstream Thunderbolt 3 port on the TBT3-UD1-85W and TBT3-UD1-83 supports video output up to 4K resolution @ 60Hz.
Why Some Downstream USB-C Ports Do Not Support Video Output
The USB-C ports (excluding the host connection) on our TBT3-UDZ, TBT3-UDC3, and TBT3-UDC1 are data-only ports and do not support video output. This means that USB-C/Thunderbolt monitors as well as USB-C video adapters will not output a display when connected to these ports.
Our TBT3-UD1-85W and TBT3-UD1-83 docks have a downstream Thunderbolt 3 port that can support video output up to 4K resolution @ 60Hz, so USB-C/Thunderbolt monitors as well as USB-C video adapters should output a display when connected to these ports.
How to Use the USB-C Ports on the TBT3-UDZ, TBT3-UDC3, and TBT3-UDC1
To connect a monitor to these docks, use the dock's dedicated display outputs instead. The downstream USB-C ports work well with data and peripheral devices, such as:
- USB-C flash drives and external SSDs
- USB-C card readers
- Smartphones and tablets for file transfer
- USB-C webcams, headsets, and audio interfaces
