This is a test of commonsense. Complete the next sentence:

How to add files to a memory stick
Locate your pc's usb port.
Usb ports are rectangular with a solid piece of plastic on the upper half of the slot and an empty space on the bottom. The port should have a graphic of three branching arrows pointing upward (or downward, depending on your pc) next to it.
If you're using a desktop, your usb ports are most likely integrated into the cpu, while laptop usb ports are usually on the left or right edges of the casing. Plug your memory stick into the usb port.