I have a hub which has worked fine but is now no longer working. A light on it still lights up and it is recognized in System Profiler. Also items plugged into it are also recognized in System profiler.
Any ideas?
Thanks
John
iMacs G5 20 inch & G3 Tangerine,
Mac OS X (10.4.3)
Have you tried a new USB cable between the computer and the USB hub?
And if another USB port than the one being used now, has not been tried
to see if the issue is in one port on the computer, and not another, try it.
Also, sometimes the lights are on, but nobody is home. The hub can be
bad and still appear to be there.
{Have you tried the computer with only the keyboard and mouse attached?
If that works OK, then consider the limits of port power to run other USBs.
Then, a new powered USB hub may work, if the Mac's ports aren't bad.}
There may be a low-power situation (assuming USB hub is powered) that
somehow does not translate into a notice or 'warning dialog box' on screen.
Perhaps one of the connectors in a USB cable or in the computer's USB
ports, necessary for data flow, is not working correctly?
At one point, I'd bought a two pack of powered USB hubs; to find one of
them did not work right out of the box. It was un-powered, yet the AC
adapter supplied adequate power. Items appeared in Sys Profiler, yet
if more than one were used, the Mac's ports could not sustain them.
The package was such a low price, I kept the working one; the store I'd
bought them from no longer had any in stock. The good one still works.
Have you tried to reset the SMC or 'power management' unit device?
This may be a last effort of desperation & signals a service tech visit.
My first hub was my mistake, as it was not powered. I was a fool. But this is powered and nothing works as if it were plugged in directly. Have I made yet another grave error?
I am finding it increasingly frustrating as everytime I plug in an ipod, ipad, iphone, usb drive, printer I either get a power message or worse, one saying I’m not even connected!
