CPU
A computer's mouse is an external device.
To substitute an internal device with an external device, first go into the CMOS setup and disable the internal device.
A computer's mouse is an external device.
Yes, modems can be both internal and external.
yes
Internal Drive
A component located inside the computer chassis / case.
Data storage outside (external) or inside (internal) the computer. The location of where the information (files, etc) on your computer system/network.
First go into CMOS setup and disable the internal device.
Internal and External
An internal modem is housed within the main computer. An external modem is on the outside of the computer and connected to the computer with a cable.
Essentially, any peripheral or component of a computer has a bus. These are either internal or external in nature. The address bus, data bus, and local bus is the system by which components communicate with one another.