On 29/05/15 13:34, Andy Burns wrote:
Tim Watts wrote:

"Full-featured USB type-C cables are active, electronically marked
cables that contain a chip
Hang on - is this the same stupid ******** that stops me powering my
Dell laptop from a generic PSU?

any idea what the "chip" is for?

The extra power is delivered by using higher voltages than 5V, so you
don't want something accidentally zapping kit that's not expecting it.



OK - that kinda makes sense, with the caveat that we are back into
"special lead" territory...

I wonder why they could not start at 5V and negotiate up using the comms
wire?