Hi,
I found a slight issue with the usb connector for the internal USB Blaster on the CRU.
The connector is mounted 2-3 mm too far from the edge, such that the USB cable won’t fit in a way that the spring mechanism is doing it’s job.
I tried illustrating the issue with the below picture, where you can see the red line representing the spring – the “hook” of the spring is resting on the front metal part of the USB connector and won’t go into the little crevasse where it is supposed to hook the cable, and you get a very poor connection, and a cable that might fall out just by random vibration.
Here is also a picture of how it looks from the outside:
And an attempt at making a diagram with some caliper measurements.
Normally a the mini-B “barrel” sticks about 1.5 mm out from the edge of the connector when it has a good contact. In this case it sticks out by ~3.6 mm, enough to not give a secure contact.