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USB 2.1 when plugging in slowly. #2311

@kevindehecker

Description

@kevindehecker

Required Info
Camera Model D400
Firmware Version 05.09.14.00
Operating System & Version Win 10
Platform PC
SDK Version 2.15.0.163
Language N.A.
Segment Robot

Issue Description

When I plug in the realsense USB-C side too slow, the realsense enumerates as a usb 2 device. If I replug the other side, it enumerates as 3.2... See a video here: https://youtu.be/4IFmsG6Wk_U

I have reproduced this issue with:
-3 Realsenses new out of the box
-5 different types of cables (longer, shorter, usb 3, usb 3.1), among which the original black cable that came with the Realsense

Some cables required a gentler touch than others, but with the cable in the video it is almost always happening like that.

Mysteriously, I cannot reproduce the issue when using a USB C to USB-C cable... (my laptop also has usb-c directly)? The Realsense is then detected as a 3.0 device by the way, which may be notable to debug this problem.

On a side note, we are putting Realsenses on drones, but we've been having many connection issues. We have now switched cables and boards to the point things seem relatively stable, but still we seem to lose connection to the camera every now and then. Sometimes that even seems to take down all other USB devices with it. Of course, these problems are very hard to reproduce as they tend to happen after take off, so I'm jumping at any connection issue which I can reproduce :)

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