Hiearcool 9 in 2 docking station (Open Box)

Update2: They have finally both failed. Passthrough to the HDMI still mostly works, but the system will no longer charge. Ethernet and USB don't show. Now that I know, I wish I would have saved my money (and time) for something else. Hiearcool does not provide firmware updates, and their support is lacking. The only useful information I have found suggests that using this in conjunction with a USB switch may be causing a problem. I could understand that for bus powered switches, but mine are not. Update1: After 1.5 years of use, with one at home and one at work. If you leave the dock powered all the time, it will fail. If the external monitor has trouble getting a clean signal, or if the system fails to pull a charge, unplug the dock until it cools down. If you generate a lot of network traffic, it will overheat. To mitigate: - Don't leave the device powered when not in use. - Add an external heatsink. I can't stress enough how much this helps. - Use external powered hubs for devices that pull power. - If an external monitor won't stay on, try leaving the laptop screen on (open). - Make very sure you are using a 88W+ power adapter and capable cable. Pros: Low profile - I grabbed two of these to mount under a desk & monitor shelf. They worked great for that. Sturdy link - by using both ports, there seems to be no danger of anything coming loose. There does not seem to be an undue amount of stress put on either port. Power - I've been able to pass up to 88W of charge power through the device. Display compatibility - I have not yet found a 4K monitor that has been a problem. I have tested up to 60Hz Windows compatibility - Did not seem to be an issue. I just went with whatever drivers it could find. Ethernet - The Realtek chipset is tried and true. I've not had issue. Metal Finish - Matches the "Space Gray" look perfectly. Cons: Connectivity - I had assumed the USB-C port was USB C 3.1 / Thunderbolt. It is USB 3.0 only. Slow card reader - I had assumed it wad a 3.0 reader. It is actually USB2.0 Heat - It will heat up - Don't use it in an enclosed space. Fidgety on power up - I blame Apple :) - It is best, when first linking the device, to leave the laptop open. If you try to rush the initialization process, your display can get confused. USB Power Draw - High power draw USB devices should be avoided. Ground - I don't know if this is a weakness of an Apple design guideline, but MacBooks and grounding issues seem to go hand in hand. This seems to be no different with peripherals designed for macs. If you are linking to any USB device that is going to remain relatively stationary, I suggest additional grounding. Some Info: This device uses 2 TB3 ports (As USB3.1) This device has 1x USB 3.0 hub and 1x USB 2.0 hub. 3.1 BUS A v3.0 Hub: 2x USB 3.0 A ports 1x USB 3.0 C port Realtek USB3 RTL8153 1GbE 3.1 BUS B v2.0 Hub: Genesys Logic USB2.o microSD Card Reader Power: As noted, I've been able to pass up to 88W of charge power through the device. It is unclear as to which ports are associated with the HDMI or power ports Linked displays show as linked via TB3/DP.