Only worth it for very specific features, otherwise, it's overpriced.
Reviewed in the United States on 28 December 2019
Buying a hub for a Thunderbolt USB-C laptop is like the story of goldilocks, with Docks/hubs that are too big, too expensive, and eventually, you find the right balance. For me, it's pretty simple. I need support for one non-4K monitor, lots of USB ports (including one for a USB wireless KB/Mouse set without interferance), and Ethernet.
For this config, the $250+ Thunderbolt specific docks are overkill. The extra $80-100 for 4K/60Hz support and TB accersory connectivity is not worth it for me. USB 3.0 are also a no go for me. Years of dealing with Displaylink drivers on those docks taught me it isn't woth the time. So, I'm down to either good USB-C docks like the TB19 or going cheap, buying a 8-in-1 USB-C hub and a separate power adapter.
I bought the TB19 because it's from Dell, hopefully working well with my new 2019 XPS 13 2-in-1, the hefty power supply, and the dedicated power button (so I don't have to open the laptop, power it on, then shut the lid, wake it from sleep with the KB/Mouse, then use it). Unfortunately, once I got the TB19, it just wasn't worth the cost over the USB-C hub.
What the TB19 does it does well. Yes, it looks great, supplies great USB-C PD power, and has multiple monitor ports. But there are big draw backs. First, the dedicated power button is pretty useless in real-world use. Yes, it does turn my XPS 13 on but the dock doesn't reliably connect video on start up. So what does that mean? It means I have to turn it on, wait until I think it boots, unplug the USB-C connector, plug it back in, hope the video connected, and then log in. Or do the whole process I described above. Second, it only has 3 USB-A ports, which is the same that most X-in-1 USB-C hubs offer also. Third, for my use, it's over kill. The power adapter is almost as big as the dock and the dock is so powerful it has a fan in the dock itself.
So, if you need multi-monitor support, or USB-C PD in the 100W+ range, then this dock actually is really good. But for my use, it's overkill. I was able to buy a 61W USB-C PD power supply, a good cable, a USB-A 3.0 hub (for my KB/Mouse), and a very nice USB-C hub for less than half the price of the TB19, and also takes up much less space on my desktop.
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