This dock has worked steadily without problems out-of-the-box, supporting a Dell XPS running Ubuntu 25.04+. I have a 4k display connected with a (UGreen) USB-C to DP 1.4 cable, and another ancient display connected to the built-in DP port with an old DP 1.1 cable. I expect everything would work fine with earlier kernels and other cables, as well. I saw a review mentioning troubles with HDMI. DisplayPort is actually a preference for me, because HDMI is proprietary and seemed like it might eventually invite 3rd party drivers on Linux, whereas DP is an open standard. So I haven't even tried HDMI. The USB-C to DP cable was not expensive, and gave me no trouble. (I did have to change settings on a monitor to select DP input.) I like that the fast USB-A ports are on the front. Slower USB-A ports in the back are perfect for keyboard and mouse, and if you want an attached SSD or something, you have more TB/USB-C in the back. But if you want to dynamically connect something, you want the faster USB-A ports to be in the front, right? Why don't others get that? The box is shockingly heavy. I imagine they would've wanted it lighter, if possible, but were forced to make it heavy. Perhaps it's unavoidable, if you want a robust power supply? I previously tried a (reconditioned) Dell WD22TB4 before this, and it just suddenly quit after a couple of days. So, maybe heavy is good. (Or they knew I'd think like that and added a slab of steel to impress me? I doubt it.) Plus, it stays put. Anyhow, I spent a lot of time weighing other options, and this box feels like the perfect balance of capability and cost, and has been rock-solid. My displays come up from sleep in about 2 seconds. I have successfully used the (much less expensive) OWC "Bus-Powered 5-Port Multi-Adapter" TB3 mini-dock with my setup (including HDMI without 3rd party drivers, so go figure). However, there were a few occasions with older kernels, when it had a big problem waking up after sleep, though it seems stable with newer kernels. It's passive and has limited ports, so I have to unplug power or juggle connections when I want to add some temporary extra connection. I did briefly create a problem for myself with the UGreen dock, when I disconnected the laptop in clamshell mode, plugged something into the dock, typed some keyboard keys, power-cycled the dock, etc, before realizing I hadn't reconnected the laptop. After reconnecting, I had to open the clamshell and unlock the laptop, in order to bring back the displays. No big deal. Be aware that other docking stations that connect via USB-C only (rather than Thunderbolt) are going to require "Display Link" drivers.
