The Acer 27.H3ZN8.001 power cable connects compatible equipment to a mains power source. Acer describes it as Power.cord.1M.eu.black, a concise reference to its black, one-metre format.
The round cable is 1 m long and has a plug at one end. At the other end is a Notebook jack C5 connector, also known as a Mickey Mouse connector. This makes it a cable with a defined C5 equipment connection rather than an AC adapter.
The product listing associates this cable type with laptops, desktop computers, monitors, tablets and televisions. Its straightforward role is to provide the mains lead for equipment that uses this connector. The exact model reference is 27.H3ZN8.001.