My MacBook Pro 14'' M1 does not recognise any of the 3 USB ports after I upgraded to Tahoe 26.1. I tried other cables reinstalling OS and moving the hard drives between the USB ports. The hard drives can be mounted on other MacBooks Any assistance will be welcomed
MacBook Pro 14″, macOS 26.1
Macs with Apple silicon have protections against attacks from malicious USB and Thunderbolt devices.
if you are connecting device you trust, use
Settings> Privacy & Security > allow accessories to connect
Allow USB and other accessories to connect to your Mac - Apple Support
Macs with Apple silicon have protections against attacks from malicious USB and Thunderbolt devices.
if you are connecting device you trust, use
Settings> Privacy & Security > allow accessories to connect
Allow USB and other accessories to connect to your Mac - Apple Support
In addition to Allow USB and other accessories to connect.........
Go to Finder > Finder Settings.. > make sure that "External disks" are checked in the General and Sidebar Settings.
Problem mounting USB ports after installing Tahoe 26.1
