A Micro-USB adapter is a small accessory that lets you convert, adapt, or extend a Micro-USB connection (a compact USB connector used widely on older phones, tablets, gadgets, and devices) to work with another USB standard or function.
Micro-USB itself is a smaller Universal Serial Bus connector designed for charging, data transfer, and peripheral connection on compact electronics.
Adapters are plug-and-play — no drivers needed — and are typically used when you want to reuse old cables or connect devices that don’t use the same port types