A patch cord, also known as a patch cable or patch lead, is a type of cable used to connect electronic devices or components within a network or system. It typically consists of two connectors, such as RJ45 connectors for Ethernet connections, at each end of a flexible cable. Patch cords are commonly used in data centers, telecommunications networks, and computer systems to establish temporary or permanent connections between devices, such as computers, switches, routers, and servers. They are available in various lengths and types, including fiber optic and copper cables, to accommodate different connectivity requirements.