The D850 came with an "HDMI/USB Cable Clip" and the D800 came with a "USB Cable Clip." I've never used either but the user manuals show these clips being used with the Nikon supplied USB-3 cable. Other supplier's USB cables lack the ring or collar found on the Nikon original USB cable.
The clip that came with the D850 looks totally impractical as the cables cross in front of the lower control buttons on the left, rear of the camera. A Jerk Stopper would probably be a better solution.
I don't know, the cable clip doesn't bother me (yes, it gets a bit on the way of using some buttons but does not prevent their use or normal shooting). I don't have a Tethertools cable or their solution to the problem but will look into it. Because my cameras have mini-USB, micro B, and USB-C connectors it would be somewhat annoying to get separate longer cables for each one. I have used the supplied cord and an extension cord that works with USB 2.0 speeds for tethering; I just haven't felt the delay to be enough of an issue to resolve the issue of how to get USB-3 speeds. But now I am testing it a bit. So far I can get about 1 D850 NEF in about 2 seconds in tethered shooting using only the Nikon cable. This is okay but doesn't break the maximum speed possible with USB 2.0.
In some earlier Nikons the cable clip doesn't require twisting the cable to run over the buttons and display. I wonder why Nikon went with this design.
I tested the Nikon cable with an USB 2.0 extension cable and it did not affect the transfer time when tethering in a noticeable way. I then tested the native cable with nikon transfer and that was about 4 times as fast as when tethering. Nikon Transfer didn't work at all when I included the 2.0 extension cord. I recall seeing a complaining message about the extension cord when setting up zoom and Nikon webcam utility, so I removed the extension cord and came to the conclusion that I need either a better extension cable or a longer standard one for USB tethered streaming.
From this I gather that tethering using Camera Control Pro 2, Lightroom or Smart Shooter 4 doesn't necessarily take advantage of USB 3 speeds, but Nikon Transfer does. On my desktop computer the Nikon Transfer speeds were about 4 D850 NEF images per second while tetherered transfers with Camera Control Pro 2 remained at about 0.5 images per second, again reflecting USB 2.0 not 3.0 speeds.
I tested LR with Smart Shooter 4 plugin and the tethered transfers were quite slow, but I'll do more testing of that later. Using Smart Shooter 4 as standalone program was about as fast as Camera Control Pro 2. Both Camera Control Pro 2 and Smart Shooter 4 allow the files to be stored both on the memory card in the camera as well as the tethered computer's drive. LR without the plugin only stores the images on the computer.