Why does lsusb show devices connected to a USB 3 port as

Why does lsusb show devices connected to a USB 3 port as usb 3 slot Check the physical ports on your computer: · If you see a blue USB port, it's USB · It may also be marked on the outside of the port with usb 3 slot On the other hand, the second USB slot supports the USB version and facilitates a higher transfer rate 3 Using usb-devices

usb 3 slot USB port or the USB device connected to the port High-speed USB hubs 3 port a superset of that of a USB Gen 2 port DisplayPort Alternate

usb 30 slot I have MacBook Pro mid 2014 which I understand have an usb port I wonder if I can use it with usb cable to connect to an arduino  Plug the camera into another rear USB port of your computer Make sure that it is a USB port, otherwise the camera will work in USB