Files exist on storage devices, such as hard disks, dvds, usb drives, and reels of magnetic tape.

Files exist on data storage devices, such as hard disks, DVDs, USB drives, and reels of magnetic tape.
Data storage is the recording (storing) of information (data) and these data storage devices use a technology consisting of computer components and recording media used to retain digital data.DVDs, USBs and hard disks are examples for external data storage devices.

Once the twisted pair cable is connected and a network is established the led lights at the back of the computer should be steady. on most ethernet adapters nowadays, a steady green light means that the connection is actively connected to a valid partner at the opposite end. if the status of the led starts flashing, this means that there’s some activity and data is being transferred.