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I have an old iMac (2012 27") running Catalina 10.15.7 and now my USB ports located on the back of the desktop are no longer connecting. All items connect to my MacBook Pro. Is there ANY suggestions? I've tried recovery mode & fixing the disk
Reset the iMac’s SMC
and the iMac’s NVRAM.
Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. You can release the keys after about 20 seconds.
then test the USB ports.
Reset the iMac’s SMC
and the iMac’s NVRAM.
Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. You can release the keys after about 20 seconds.
then test the USB ports.
Before you run off to the Apple store, run System Information (in your Utilities folder) and see if that "sees" the USB buses. Select "USB" from SI's left-hand Contents pane to get this:
If the main pane is blank, then the USB buses are likely toast, If individual buses show like about, there may be hope.
You may need to do the SMC reset more than once. Also, I've had issues with SMC resets not "taking" because I count too fast! Try 30 seconds unplugged and 15 after replugging, just in case you count as fast I I do
Running Apple Diagnostics may point to a specific hardware fault:
Use Apple Diagnostics to test your Mac - Apple Support
Thank you so much, it didn't fix the problem. I think the USB ports have failed. So after 10 years, I'll retire this machine & buy a new one
You’re welcome.
USB ports not connecting on 2012 iMac
