Hello, We have a problem with a destroyed notebook USB port when it was connected to BeagleBone Black. Our system: we designed an extension board connected to the BBB pin-headers P8 and P9. Let's call this the 'ERTEC board'. The ERTEC board supplies power to BBB via the connector P9, pins 5, 6, which is VDD_5V. The VDD_5V rail in BBB is basically the barrel jack input. The picture below shows the setup:
[image: smoke_from_notebook_usb.png] *Normally the system works fine. * But now one colleague reported this problem: 1. He had the Mini-USB of BBB connected to a PC (which is grounded...), and the whole system was powered from a +24V isolated supply and running. 2. While the system was running, he pulled the USB cable from the PC and connected it to a USB3.0 port of a notebook. 3. The USB connector of laptop started smoking. The laptop and BBB didn’t work after that. Any idea why this could happen? So far it seems like an one-off event, but one could never know :-/ Thanks, Jaroslav -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/90b8ff71-1cd4-4a26-adce-70c8806f5c4f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
