A patch cord or patch cable is an electrical or optical length of cable with connectors on the ends that is used to connect an end device to something else, such as a power source. There are a number of devices that are connected with patch cords, one of the most common uses is connecting a laptop, desktop or other end device to a wall outlet. They come in various colours to be easily distinguishable and are usually short in length.
Headphone extension cables
Tiny Telephone (TT) connector
Modular Ethernet cables
Snake cable used to carry video
Patch cables are typically CAT5/CAT5e Ethernet cables linking a computer to a nearby network hub, switch or router, or a switch to a router, etc.
Ethernet patch cables are useful to those building home computer networks and also to travellers who need wired access to the internet like those provided in hotel rooms.
A crossover cable is a specific type of Ethernet patch cable used to connect two computers to each other.
Non-networking patch cables might include headphone extension cables, microphone cables, and RCA connectors, patch panel cables, etc.
Patch cord cable is different from structured cabling cable in that patch cable is stranded for flexibility, whereas standard cable is solid copper. Patch cords are often made of coaxial cables, with the signal carried through a shielded core, and the electrical ground or earthed return connection carried through a wire mesh surrounding the core. Each end of the cable is attached to a connector so that the cord may be plugged in.