Ant wrote:
Paul wrote:
But that's what Boris showed in a link.

This is the converter already tried.

https://www.amazon.com/Generic-Adapt.../dp/B002OV1VJW

Checking Disk Management or Device Manager might show
some evidence it's being seen.

If the drive didn't have power, that would exhibit
the same symptoms. The power cable might not be
plugged in.

Since those adapters sometimes fail (usually the wall
adapter), testing with an "expendable" Windows drive
to see if it still appears, would prove the hardware
works.

Wow, that almost look like Vantec's I am using.

Years ago, there was an "epidemic" of cheap USB
to three-drive-flavor adapters, where the power
adapter was just plain bad. The responsible companies
eventually figured out this was bad for business
(blowing up customer drives and such).

I've not seen a bad 12V adapter here (yet).

There was a time, probably close to 20 years ago,
when drive enclosures used a four pin power connector
(circular DIN). Somebody decided it was more fun to
do a 12V only adapter (barrel connector), then have
the controller board in the enclosure convert the
12V to 5V. I don't know which scheme is more dangerous.
Fortunately, in 2018, the controller board in the
enclosure uses a switcher rather than a linear regulator
(7805 etc) for the 5V output. It could be a "buck"
converter (as a buck doesn't do isolation, and
isolation isn't needed for DC to DC cases
like this one).

Paul