List Usb Device in Mac
Method Two via Terminal
Using system_profiler: Open terminal, copy and paste the below command:
system_profiler give much more detailed information of usb device attached to the mac.
Method Three via GUI
Step 1: hover your mouse on apple icon on top left corner and then click on “About This Mac”.
Step 2: Click on the “System Report” button.
Step 3: on the left there is listing , from that click on usb.