接线板（又称拖板、插排、延长线等）是电源插座的延伸工具，能使单一插座供应多台电器等的电源供应。接线板能解决单一插座只供应单一电器的问题，也解决电器距离过远使其他接线无法接上的问题。接线板通常带有断路器以中断因超载或短路引起的问题。

A power strip (also known as an extension block, power board, power bar, plug board, trailing gang, trailing socket, trailer lead and by many other variations) is a block of electrical sockets that attaches to the end of a flexible cable (typically with a mains plug on the other end), allowing multiple electrical devices to be powered from a single electrical socket. Power strips are often used when many electrical devices are in proximity, such as for audio, video, computer systems, appliances, power tools, and lighting. Power strips often include a circuit breaker to interrupt the electric current in case of an overload or a short circuit. Some power strips provide protection against electrical power surges. Typical housing styles may include strip, rack-mount, under-monitor and direct plug-in.