What Does Secondary Storage Device Mean?

A secondary storage device refers to any non-volatile storage device that is internal or external to the computer. It can be any storage device beyond the primary storage that enables permanent data storage.

Techopedia Explains Secondary Storage Device

Secondary storage devices primarily refer to storage devices that serve as an addition to the computer’s primary storage, RAM and cache memory. Since they always consist of non-volatile memory, they allow the user to permanently store data on them.