Why my Lenovo Thinkpad E16 Gen3 (model 21SR007DUS with Intel Core 22U5, running Win11 25H2 with Thunderbolt4 support) when connected to a Plugable TBT4-UD5 recognizes only one external monitor?
Use conditions:
I have updated all drivers to latest versions as of 2/18/26
I am using the provided Plugable Thunderbol4 cable
Both monitors support HDMI
Both monitors work if connected individually
I can get both to work concurrently if one is connected directly to
Thinkpad HDMI port and the other to TBT4-UD5 HDMI Port 1 (not on port 2)
I can even get the Thinkpad to support all three monitors (the built-in monitor plus two external) as long as one of the HDMI monitors is connected directly to the laptop.
NOTE: In case this helps, I can get the “sleeping” laptop to get back to life by pressing the dock station power button. I CANNOT turn it on from shutdown state, though. If turning on from shutdown is supported, I’d like to know how to enable.
Hi, I am having the same problem with my Dell 14 Plus 2-in-1 DB04250. I dock my laptop with both external monitors plugged into the HDMI ports. Only one of the Monitors works along with the laptop screen. If I plug one of the monitors into the laptop hdmi I can see all three monitors.
When the laptop is docked, I don’t care if I see the laptop screen. I really would like to see both external monitors.
Thank you for the response, although I am sorry to hear that you are running into issues here also with your TBT4-UD5. Can you reach out to us directly at support@plugable.com so that we can help troubleshoot this email? Please be sure to reference Ticket #491374 in the subject line.