If you want more storage for your PC, you can attach an external storage device. To add an external storage media (an external disk drive or flash drive) to your computer:
Attach one end of a USB cable to the external drive.
A USB cable has distinct ends, so don’t worry about plugging in the wrong one.
Plug the other end of the USB cable into your computer.
Your PC should have at least one USB port.
If the external storage drive requires power, plug the drive into the wall.
Or better, plug it into a UPS.
Turn the drive on if it has an on/off switch. Open the Computer window on your PC.
You may not need to worry about this step because not all drives have this switch.
When you plug the drive into the USB connector, and assuming that the drive has power and is turned on, Windows instantly recognizes the drive and adds it to your computer’s list of permanent storage devices, found in the Computer window.