Q: Usb connection on macbook pro
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Oct 4, 2016 1:29 AMby lllaass,- Do the USB devices appear in System Profiler/information under USB?
OS X: About System Information and System Profiler - Apple Support
- Try resetting the SMC and NVRAM/PRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
https://support.apple.com/en-us/HT201295
https://support.apple.com/en-us/HT204063
- Try starting in Safe Mode
OS X: What is Safe Boot, Safe Mode?
https://support.apple.com/en-us/HT201262
- Boot to Recovery and repair the startup disk
OS X: About OS X Recovery - Apple Support
https://support.apple.com/en-us/HT201314
Also, when in recovery connect a USB drive and see if Disk Utility sees the drive
If still problem, make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar
https://www.apple.com/retail/geniusbar/
This is the Mac Pro desktop forum. I requested your post be moved to the MacBook Pro laptop forum or other appropriate forum.
