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I have a bunch of USB A to Mini B cables and a single USB A to Mini A cable. I have lost track of where they come from. The two types both look exactly the same with the USB A side having a white plate inside and the shape of the Mini plugs are the same too. So the only difference is that the Mini B plugs are black inside and the Mini A plug is white inside, like the plugs shown here, but my Mini A looks exactly like a Mini B except that it's white.
What is the difference between my USB Mini B and Mini A cables? Do they have the same performance when plugged between my external hard drive and my computer? If not, which type would be better and how?
Should I trust the shape or the color? Because, again, my Mini A plug looks exactly identical to a Mini B plug except for its white-colored plate inside. So could it be that my Mini A is actually just a white-colored Mini B?
Is an external hard drive with its own power source an A device or a B device? As it says on Wikipedia "only the A-type socket provides power. There are cables with A-type connectors on both ends, but they should be used carefully." But I guess I still should use a standard A Male to Mini B Male between my powered PC and powered external HDD. Is there any case with external HDDs where I should use standard A Male to Mini A male?
– randwa1k – 2014-10-21T02:06:42.8672A Hard Drive with its own power source is a Self-Powered Device, just like Hubs. And no, not according to the USB specs. I mean, mini A and mini B cables are wired the same and the difference is just the physical shape, but its non-standard to have a mini-a connector on anything that is not OTG compatible. – cde – 2014-10-21T02:12:46.353