Hi Lawrence,
This is Damon from Blue Trail Engineering. We have done several different types of USB connectors using our Cobalt connectors. Every customer has slightly different needs, so we don’t have a standard USB connector configuration. But if you drop me a line, I’d be happy to help you out. Typically, when we do a USB connector, we charge just $5 or $10 more than our standard connectors.
Under the bulkhead connector’s protective cap (which we call a “dummy plug”), there would NOT be a USB connector. Instead, you’d have to plug in a USB-to-Cobalt adapter cable (which we would provide).
Our connectors are rated to 600m and are extremely reliable.
I believe most of my customers are doing USB 2. Eliot is right: USB 3 may not work as well.
Damon