I have two copies of this unit which I will be returning this week and both have the following behavior so I assume this is intentional and not a fault is . I bought this device because Anker is a very reliable brand and there are several (seriously, less than 3 legitimate brands) USB-C hubs that have BOTH power pass-through and an additional USB-C port. So you can charge and use another USB-C device at the same time. I use a USB-C webcam with my laptop, and thanks to remote work, I'm in meetings more often than I used to be. My laptop only has a USB-C port, so I always switched to charging after meetings and my webcam before meetings. It got annoying, but my webcam was using so much power that my battery only lasted 3 hours of non-stop meetings on a single charge. Since I'm in meetings all day, I had to forgo my webcam on late calls so I could charge my laptop's battery (via a USB-C port). Choose this product. my salvation? Unfortunately there aren't any. Although the device allows you to transfer power through the PD's USB-C port and connect a second USB-C device, data transfer through the second port is unreliable and unstable. For a few minutes my webcam image was intermittent (think old TV with poor signal). After about 5 minutes, the webcam video froze completely and the hub reduced power, then reconnected. I thought it might be my laptop charger. It's only 65W and the hub uses 15W of that, so I was concerned there might not be enough power to charge my laptop, use the 15W hub and my webcam. So I used my 100w charger instead. Exactly the same problem. It might work with other USB-C based peripherals, possibly ones that don't draw power, but it doesn't work reliably for my needs. This is very unfortunate as there aren't really any other hub-based options.
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