No, it's a device used to create and enhance signals. It's almost never used for data storage.
A device is an example of technology. A null modem cable is a device.
A modem
storage that's easy
modem
The device you are referring to is called a Modem.
A modem (Modulator-demodulator) is both. It allows you to input data (download) and output data (upload).
A modem is a peripheral device based on the fact that peripheral devices are devices located on the outside of a computer
modem is device which is used to connect the Internet to computer
Not in the strictest sense. It is an IO device and a converter. They often do have processors on them, and they are used for conversion, compression, and decompression.
Modem
A computer is an output device.
storage device storage device