[dba-Tech] External USB problems

Peter Brawley peter.brawley at earthlink.net
Wed Nov 13 17:39:06 CST 2019

On 11/13/2019 15:26, Arthur Fuller wrote:
> I cannot figure out why my two external USB port link-banks are
> unrecognised. Perhaps it's that One has 5 ports and the other 10, and
> neither work. They used to but as of a month ago they both ceased to work.
> I have no ides  how to find the failing point, other than to disconnect
> everything then test each external directly into the port, verify that each
> works, and if they don't, discard them, and if they do, move on until done.
> If each individual works, then the problem is the multi-port things.
> They're cheap and maybe that's the problem. But I'm looking for a more
> scientific approach to the solution than my humble resources can offer.
> Suggestions

Many USB hubs, esp. cheap ones, have little power capacity, often not 
enough for even a small portable drive, so it might be your hubs work 
for low-powered thingies like a mouse, but not for a something that 
needs more power.


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