Learn in the textbookAuxiliary Storage and Flash Media — HDD, SSD, USB, SD
DefinitionA USB flash drive (USBメモリ) is a portable storage medium with built-in flash memory that plugs directly into a USB port.
ExplanationSmall, light, and ready the moment you plug it in, it is used to move data between devices and to store files temporarily. Its contents stay intact even after you unplug it and the power is cut.
Memory hookUSB stands for Universal Serial Bus, originally the name of a general-purpose standard for connecting devices. The drive takes its name from the port it plugs into.