Updated 1/10/22: (lowered to 1 star)If you're using this with a Mac and a Gigabit wired ethernet connection, you're not going to get Gigabit speeds. I'm seeing more like 250Mbps. Interestingly, when I compare this dock with Belkin's USB-C to Gigabit adapter, their USB-C adapter works great. See the throughput tests in the pictures. I'm going back and forth with tech support, but I'm not optimistic.Update 12/3/21: (lowered to 3 stars)I'm now using this with an M1Max 14" MBP. In short, it's still working. Both 4K monitors work great and power delivery is fine. I don't think it does fast charging through the USB-C port like you get from the MagSafe 3 connector, but that's an Apple limitation. Also note that this is Thunderbolt 3 and the new M1 MacBook Pros are Thunderbolt 4. So we're not getting fully Thunderbolt 4 speeds. Practically speaking, I don't think this matters much.--> After over a year of use, one weird issue that I've noticed on both my old mac and my new mac is that sometimes peripheral USB devices connected to the doc don't reconnect after I plug the thunderbolt cable back into the laptop. It happens when I disconnect and reconnect the laptop. I have a USB audio interface that just uses MacOS's core audio drivers, e.g. no 3rd party driver, so if anything it's a mac driver issue. Or it's an issue with the dock itself. To fix the problem, I have to unplug the USB audio interface from the dock and plug it back in. I've lowered the review to 3 stars, because this limitation makes the dock frustrating to use. But I don't know if this is a Mac issue or a Dock issue.Original:I plugged it in, and it worked immediately and flawlessly, which I'm honestly surprised by given the reviews here.My setup: I have two 27" 4k LG monitors with USB-C interfaces (as well as HDMI and DisplayPort interfaces). I've been running them straight to my 2018 MBP 13" using USB-C. The LG monitors are gorgeous, but the MacBook forgets which monitor is which regularly, meaning that it swaps which monitor is on the left and which one is on the right. This is super annoying, and I hate it. Despite the terrible reviews for this hub, I figured it'd try this. My MBP has 4 Thunderbolt 3 plugs, and this hub indicates that it supports 4k at 60 Hz for two displays when using Thunderbolt 3. Well, as I said, I plugged everything in and it just worked. One monitor uses the USB-C Thunderbolt on the back of the hub. The other monitor uses the DisplayPort plug. I have 3 USB-A peripherals plugged into the back of the hub, all of which require full power to run. My webcam runs through the USB-C monitor's USB-A hub on the back of the monitor, and that works fine, too! The Gig-E ethernet plug passes my network speed test. I've tried the front USB 3.1 plugs and the SD Card reader, and they work. I haven't tried the mic jack yet. So far, it just works, and even better, the Mac doesn't forget which monitor is which. The only complaint I have so far is that the hub gets really hot, so I worry about long-term reliability. 4 stars for now until I see how it lasts.For those of you having problems, I'm not surprised. My experience with multi-monitor hubs is that they are very temperamental to system and monitor combinations. I don't really know why, but I've abandoned several over the years. You basically just have to try them out and return them if they don't work.I'll update the review after I run this for a few months, and after I run this with Big Sur.