Lenovo ThinkPad Universal Thunderbolt 4 Dock, 4 Displays, Dynamic Power Charging up to 100W, Black

I have both a Lenovo X1 Carbon Gen 9 and 10, and I am able to run two external 4k displays (3840 x 2160) at 60Hz over DisplayPort (in addition to the built in display). It also handles all of my USB devices just fine. I'm running Ubuntu Linux on both laptops.I was pretty confused about USB-C vs Thunderbolt, and I had been using the "Cable Matters 8-in-1 Portable 40Gbps USB4 ... , Compatible with Thunderbolt 4" dock but I was only able to reliably get one external 4k display working at 30 Hz. I could occasionally get 2 external 4k displays working at 30 Hz, but I couldn't reliably reenact the magical incantations necessary for this.

I bought my first Lenovo ThinkPad Universal Docking Station in November 2023, when I bought a new Lenovo Laptop. I registered my ThinkPad with Lenovo and it had a 3 year warranty on it. They thought is was odd because it was set up for Australia they told me by the serial number. I was told to just update the firmware & drivers and it should work fine. Lenovo didn't know much about it, but updated drivers and firmware and told me I had to deal with ThinkPad if I was having issues with it. When I contacted ThinkPad they refused to help me and told me Lenovo had to help me. Went round and round for 6 months. I wasn't certain it was the docking station and not the laptop, but eventually got there. I remembered a week or two ago, when it wasn't working right (The ports on the docking station worked intermittently, and it was getting worse and worse.) that I had an Asurion Policy on it. Asurion took great care of me and had me mail it to the manufacturer. They kept it for over a week and the end of the 2nd week Asurion sent me an email saying they couldn't fix it and sent me my money back. So, I bought another one from the same seller and this one when I registered it said it was for Germany. It was starting to goof up on the same way and I returned it. I bought a used on ebay that is registered for use in the US and still has some warranty left on it. A lot of good that will do with ThinkPad refusing service, but at least I know it is for U.S. use. If you get one for the US it is an great little docking station, but my older HP docking station did better than two made for other countries.

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I normally don't write reviews, however I had to do quite a bit of research before I landed on this one. Disclaimer towards all my views here, I bought this "Very Good" condition used on Amazon for around 140$ shipped. My attitude and rating reflect that price point.I am able to connect this to my Macbook, it charges my laptop and I am able to get two DISTINCT external screens. It took some fiddling to do this. I have two external monitors I use, a Samsung Neo G8 32inch 4k 240HZ and LG 27inch 4k 144Hz.My initial setup was to use this dock to power my mac and run the Neo G8 through the display port with a seperate thunderbolt input for the LG direct into the laptop via DP to TB cable. I was not able to get the Neo G8 to start up with either DP port on the dock. Neither the standalone nor the one that shares its chipset with the HDMI. I tried installing the DisplayLink drivers but it didn't recognize my monitors. I realized it may be my settings and permissions, but I'd have to weaken security too much through the kernel to do this just for DisplayLink. However, I found that the port was able to support DP to my LG monitor. So using DP to the LG, and then connecting my second monitor to the TB4 port on the dock via a DP to TB cable, I was able to get two distinct screens out of this. So before you go thinking that it doesn't work from one of the DP ports, check against another monitor. And use the DP port that's standalone (not stacked with HDMI) for testing, that one runs on a better chipset. Note that I believe that if you want to drive two screens on this, one of them must use the TB4 port. The others will all mirror each other if you're using a Mac.The Macbook works with this, but it doesn't play well. For my needs it's sufficient after passing the setup headache. Things I still have to watch it for. I use my dock with my laptop in clamshell mode, laptop lid closed. Sometimes it wont wake from sleep using my keyboard, meaning I have to open the laptop, login. Sometimes an additional step of replugging the port in is needed. The audio jack in the front works from single port mic and audio. It's well powered but dont plug your headphones in and out all the time when it's docked. The system has to re-register that there is an audio device present and sometimes it takes a bit.That all being said, I believe this is one of the better TB4 ports that you can make work with the Mac M1. If I had to spend 300$ on a dock, I'd probably go with Caldigit, more straight forward especially with everything having a thunderbolt converter cable these days. But for that price I could buy two of these at today's price.Best of luck.

Recently want to upgrade my Lenovo Thinkpad TB3 dock to this new version, but I found even it fully support Lenovo's own legion laptop with HDMI 2.1 over 4k@120hz. I checked the display info, it shows the card is wired through 'display port' internally. confirmed in game, it's just 4k@120hz, no G-sync, I think it's a limitation on LG CX, it's a special protocol used by LG and nvidia to arrange G-sync compatible.It couldn't output any HDMI signal from my Intel 2019 MacBook Pro 16. I had to use a downstream TB4 port on this dock then connect another USB-C to HDMI 2.0 cable and output to my tv, of course it's limited to 4k 60hzHowever, it does support my Intel 2020 MacBook Pro 13 and 2021 MacBook Pro 16 which is very strange. Of course, all of them are HDMI 2.0 due to limitation of MacOSAnd it does USB PD charge with 92w to MacBook Pro but it can't deliver any power to its own Lenovo Legion 7i, even though Legion can support 100w PD charging from TB4 port.Now I'm very confused by this dock. btw, firmware updated to newest 1.07 on lenovo website.Update on 6/5/2023:After a firmware update a while ago, it finally support M1 MacBook output 4k@60hz directly from HDMI port, but too bad due to Mac limitation, it's only HDMI 2.0 signal so no 4k@120hz.But I do "solve" this problem by recent hack from community using a special adapter to convert TB/DP alt signal to HDMI 2.1, I won't go into details, just search Thunderbolt -> HDMI 2.1 solution for M1/2 Mac for solution