USB 3.0 works do not 5 k 27 "iMac

I use a USB 3.0 hub powered to exchange a variety of devices, but some require a port "directly connected".

I keep a usb expansion to a single port just for these applications.

This port has stopped working.

I connected without the extension, tested with known working devices.

Stopped and re-started

Turned off, unplugged, power cable, reset the SMC rebooted

Rest PRAM as a last resort...

It still does not.

It is a call to the more broad community is there anything else I can try before the visit to the Apple Store...

Any help appreciated

Hi, geebeeAU.

Please visit Apple support communities.

I understand USB devices are no longer works on a specific port.  Here's a troubleshooting article that can provide additional solutions to your question.

OS X El Capitan: If a USB device does not work

See you soon

Tags: Mac

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