An on/off button that is made of tiny metal connectors is called a jumper. Jumpers are frequently used in combination to set up parameters for electronic devices. Some connectors have a plastic button covering them that can be turned on or off. Other sweaters are two metallic spikes connected by plastic covers with metal linings. The link is active when the cover is on, and it is inactive when it is withdrawn.

Hardware for computers and other electrical gadgets both contain jumpers. For instance, a motherboard might have switches that are used to activate various component kinds. Jumpers are frequently found on hard disks and can be used to activate or stop various functions. Spread spectrum synchronization (SSC) might be enabled by one jumper setting, while PHY, or "physical layer" mode, might be enabled by another jumper setting. The hard disk might need to be configured in order for it to function with a particular kind of technology.

Remote devices and other typical home gadgets contain jumpers as well. For instance, a series of wires might be present on a garage door control. The parameters on these circuits must line up with those on the garage door sensor for it to function. Jumpers that can be adjusted to fit a particular fan's settings are frequently included in remote controls for ceiling fans. The frequency on which a remote talks is usually changed by adjusting the circuit settings. This enables you to use various bands with various gadgets.

Although modifying connectors may seem like a complex procedure, it is typically very simple. For instance, switches are frequently located right next to the battery on remote controls so that they can be quickly turned on or off. Just make sure you understand how to alter the circuit values properly before doing so. The gadget might not function if the incorrect pins are modified.