Editing Jumper (computing) (section)

== Use ==
[[File:Jumper on motherboard.jpg|thumb|Red jumper on a [[pin header]]]]
When a jumper is placed over two or more jumper pins, an electrical connection is made between them, and the equipment is thus instructed to activate certain settings accordingly. For example, with older PC systems, [[Central processing unit|CPU]] speed and [[voltage]] settings were often made by setting jumpers.

Some documentation may refer to setting the jumpers to on, off, closed, or open. When a jumper is on or covering at least two pins it is a closed jumper, when a jumper is off, is covering only one pin, or the pins have no jumper it is an open jumper.

Jumperless designs have the advantage that they are usually fast and easy to set up, often require little technical knowledge, and can be adjusted without having physical access to the circuit board. With PCs, the most common use of jumpers is in setting the operating mode for [[AT Attachment|ATA]] drives ([[master/slave (technology)|master, slave]], or [[cable select]]), though this use declined with the rise of SATA drives and [[Plug and Play]] devices. Jumpers have been used since the beginning of printed circuit boards.<ref name="Weedmark 2013">{{cite web |last=Weedmark |first=David |date=2013-06-13 |title=How to Use Jumpers on a SATA Hard Drive |url=https://smallbusiness.chron.com/use-jumpers-sata-hard-drive-69047.html |access-date=2023-06-01 |website=Small Business - Chron.com}}</ref><ref name="th99.80x86.ru 2007">{{cite web |title=jumper settings| website=th99.80x86.ru | date=2007-05-18 | url=http://th99.80x86.ru/ | archive-url=https://web.archive.org/web/20071023061114/http://th99.80x86.ru/ | archive-date=2007-10-23 | url-status=dead | access-date=2023-06-01}}</ref>