An assembly of twisted pairs without connectors used to used to join telecommunications circuits at the cross connect Similar to a patch cable (which has connectors)
A tiny connector box that slips over two pins that protrude from a circuit board The jumper can be moved to change electrical connectors When in place, the jumper connects the pins electrically Some board manufacturers use dual in-line package (DIP) switches instead of jumpers
A patch cable or wire used to establish a circuit, often temporarily, for testing or diagnostics