So the question is often asked: What is a MAC address?
An interface to a network from a computer or server or printer (or really anything that connects to a network) that interface enables that computing device to send and receive data across the network.
It’s typically referred to as the “network interface” All modern computing devices have a network interface either wired to connect to an Ethernet network using Ethernet cables like these or wireless to connect to a wireless Access Point (AP).