September 2022
I have an older iMac and the newer 3.0 USB powered devices won't always work using the older 2.0 USB ports on my iMac. Best Buy's Geek Squad hooked me up with a powered USB hub that plugs into a wall socket. Now my older 2012 iMac can access 3.0 devices, such as my new Samsung SSD external hard-drive.
