LenovoUSA ThinkPad Thunderbolt 3 Dock Gen 2 135W (40AN0135US) Dual UHD 4K Display Capability, 2 HDMI, 2 DP, USB-C, USB 3.1, Black

Bought used looks brand new works perfect

I’ve ordered probably 50 of these for our call center agents and they work great! Lots of ports for monitor connection by HDMI and Display ports. Never have had any issues. Pair well without ThinkPads.

I have a Linux desktop that's a bit old, but works well. I got a refurbished Lenovo L13 Yoga laptop which is newer and faster, and came with Windows 10, upgraded to 11. I immediately put in a 2TB internal SSD, installed Linux but kept Windows on half the drive. I wanted to use this laptop as my main system, connected to my existing monitor, and I have a logitech keyboard/mouse that can switch between 3 systems, so I can use it for the old desktop, and the laptop with both Linux and Windows easily.So... after a short time, I decided that getting a dock would make this all much nicer, and it did. I've been able to reduce cable clutter, have more USB 3 ports, and a wired network connection that doesn't interfere with the USB-C port (Don't know who designed the connectors on my laptop, but they don't both fit at the same time).Got the refurb model of this dock, connected it up with no directions (there were none) and everything worked right off, with no extra drivers or settings. The audio works just like connecting a line out - all automatic. Even the on/off switch works to turn the laptop on and off. I believe it does not charge when off, which will keep it from overcharging. I'd imagine you could get around this if you needed to charge it while off.As a bonus, it charges faster than the charger that came with my refurbished Thinkpad, which was not the original Lenovo charger.By the way, I connected the speakers together with the desktop by using a simple Y-connector for the audio outputs.

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.now in Feb 2022, the dock died after 3 yrs, the battery indicator keep flashing when i connector laptop to the dock, changed with another windows laptop, same result, i wont purchase any Lenovo products anymore, so lame, revise the star to 1.

My ThinkPad X1 Gen 7 laptop runs Linux (a Ubuntu derivative), but the manufacturer only guarantees compatibility with Windows, so I was a bit concerned if it would work well for me. However, it worked just fine. I didn't notice a single issue with regard to the dock station.Some overview of my experience:- The keyboard/mouse attached to the station will NOT work during the cold boot. They will fine work during a soft reboot though.- I use 2 monitors (HD + 2K). Tried them via HDMI and DP connectors, and all the modes worked well. I managed to get 1920x1080@144Hz via DP. 2K is constrained to 60hz. I guess you should not expect anything better at 4K.- I loved the dedicated headphones/mic jack on the station's front panel. It's very convenient. However, it's a separate audio device, so you can't just switch the head set, you also need to change settings in the apps.- One feature that this station has and it's not mentioned anywhere in the docs or amazon description is a power button. It's not the station's power button, it's a "relay" to the laptop's power button. By using it you can power on/off your laptop. Once, I managed to make my laptop sleeping via this button, but I have no idea how it happen. Alas, it's not documented. I'd suggest that some OS support is needed.If you're running Linux on ThinkPad X1 and want to use this station, make sure that:1. You have the latest firmware. They did a lot of fixes for Linux compatibility.2. The thunderbolt packages are installed and up to date.3. The docking station is properly enrolled (see "boltctl" for Ubuntu).All in all the station is made very solid. Couple of "not so well" things that did NOT affect my review:1. The station heats up a lot. It seems it consumes a significant amount of energy for own needs.2. The docs are too brief. It's hard to figure how/if the USB ports are different.3. The power button behavior is not covered in the docs at all.UPDATE (-1 star). When I received a new 4K monitor (BENQ), I figured that this dock port cannot handle 4K+2K setup. I wonder how it can handle 2x4K then. I've spent hours trying different cables and settings, and the conclusion is: two high-res monitors simply won't work via the station. The only working setup is attaching one of the monitors via the laptop's HDMI/USB-C port. It can be a Linux issue though. I haven't tested it on Windows.