The Acer 27.01218.191 power cable connects a Euro CEE 7/4 mains socket to a device with a C5 power inlet. Its defined connector combination makes it suitable for linking a compatible power adapter to the mains supply.
At 1.8 m long, the cable gives room to position the connected equipment within reach of the socket. It is identified specifically by its CEE 7/4 to C5 ends, so the two connector types are clear when matching it to a setup.