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Works mostly as advertised. I have a Lenovo X1 Tablet Gen 3. I can connect 2 additional monitors so can have essentially 3 including my tablet. My monitors are quite old, but still work well except for with this dock for some reason. Have tried updating everything I can think of/find to update. The display of the desktop wont fill the whole screen. The screens do work when attached to other computers and other displays do work when attached to the dock. Just these ones I have don't seem to work 100%. Other than that a few notes: I noticed after buying and setting it up that it doesn't have an audio output other than for headphones. USB mice/keyboard connected through the dock seem to need to be re-recognized each time the device is connected and will only be recognized after logging in. So, when freshly connected, must use the tablet to login.
I used it on my X1 Extreme gen 2 and after going into BIOS setting and turning the thunderbolt 3 security off, my cpu got fried. Repairshop must replace cpu which is very expensive. I dont even know if warranty covers this. This garbage of a product might have cost me a $2.6k laptop.
I realize the X1 extreme wasn't compatible after the matter but it should not completely destroy my CPU.
Finally i decided to write something about the performance with macOS.
Well, everyone knows this is a pretty tb3 dock, and i use it with my DELL 5290 2-in-1 (2* tb3 ports), everything works fine, power delivery, DP output 4K@60zh, HDMI output 4K@60hz, ethernet, extra tb3 port, all checked, it is a perfect dock if you want to a reliable TB3 connection.
However, in my scenario i also want to use it with my macbook pro, 2017, 15inch. the fact is, i can't get the 4k@60hz from its own DP/HDMI ports, i have to use USB-C to DP/HDMI cable to connect it through the tb3 port at front panel, otherwise i have to run at 4k@30hz@HIDPI OR (QHD@60hz but without HIDPI). i have tried to intall the latest firmware through its website but no luck, it's really bad but we cant blame lenovo. anyway they designed it to support its own laptops (windows), the macOS support will never on its roadmap. but still a bit shame.
Nov 2019, yesterday I updated the dock firmware to the latest 3164 version by a windows laptop, then switch back to macbook pro with macOS Catalina10.15.1, now I can get the 4k 60hz from the dock's dp. great work. the problem is, it looks the power supply of the dock are not sufficient for the macbook pro anymore. the battery of the macbook pro drained quickly after i connected the display to the dock's dp port. not sure if its firmware issue or i have too many payloads here. then i have to use the original power supply of the mbp to charge it. after did some research, i connected a secondary power adapter to its 230w port, now the dock is chargd by two power bricks and then it can charge the mbp again. all done now.
This is a well designed product that target's Lenovo's Thinkpad line of laptops. Bought it to go with a new Carbon X1 Generation 6 that Lenovo sold prior to introduction of Gen 7.
Although I did eventually get my Thinkpad and docking station to work with each other, it was a stretch. And Lenovo's website was almost worthless during the process.
I suggest the following to Lenovo:
1. When you are trying to blow out a lot of last-generation Thinkpads to make way for a newer ones, you'll have a ton of new Thinkpad owners who are candidates for a docking station. Why must we go on a internet hunt for a compatible one? Why doesn't the box the Thinkpad comes in contain a flyer that announces "this is where you go to get the dock"?
2. Technical articles on Lenovo's website are ambiguous (and in some cases, flat wrong) about the compatibility of the Gen 2 Dock with Carbon X1 Gen 6. I purchased the docking station fully expecting that the product would not work with my new Thinkpad. Why is this necessary?
3. The box that the docking station arrives in should contain documentation pointing to a Lenovo website that answers basic installation questions like "does my Thinkpad's BIOS need refreshing and where do I obtain that new BIOS?" and "does Windows 10 need a Lenovo driver download to use the docking station?"
4. I thought that yellow was an internationally agreed-upon color to signify that something isn't working properly or that the user needs to be wary. Does the yellow LED that glows in the center of the docking station's on/off switch mean that the docking station isn't working correctly? If the docking station is functioning properly, does the on/off switch eventually turn green?
This is a wonderful docking station with a lot of engineering behind it, but there needs to be a bit more customer hand holding behind it at time of sale and installation with Lenovo's Thinkpads.