So my roommate bought that weird Hand386 portable PC that popped up on aliexpress. Let's tear it down (nondestructively for once, since I'm borrowing it).
@jpm@foone I don't think there was anything specifically preventing the 386 from having USB aside from USB showing up well past the 386's prime. I don't think my 486 or even PII had USB, but 486 PC-104 dev boards a few years later that I worked with did.
@emag@jpm@foone USB showed up around the Pentium Pro/AMD K6 era. I had it on my board at the time (header only) and my current PII machine has two ports on the back.