What term refers to a computer's internal storage and drive hardware?

The term that refers to a computer's internal storage and drive hardware is the hard drive. The hard drive is a critical component of a computer, as it is responsible for storing all of the system's data, including the operating system, applications, and personal files. It provides the long-term data storage necessary for the computer to function effectively.

In contrast, RAM (Random Access Memory) is a type of volatile memory that temporarily holds data while the computer is running, but it does not provide long-term storage. The motherboard is the main circuit board in a computer that connects all components, including the processor, RAM, and storage devices, but it is not a storage device itself. The power supply unit provides electricity to the computer and its components but does not store data. Thus, the hard drive is the accurate choice for referring to internal storage and drive hardware.