Jumper

• Jumper is short length of conductor used to close, open or bypass part of an electronic circuit.
• It is a small item used next to the hard disk, CD-ROM, DVD/RW and the CMOS Battery of the motherboard.
• It is used to master a hard disk or CD-ROM, DVD/RW, and to set and remove passwords in CMOS.
• It is also called CMOS Jumper, Hard Disk Jumper, CD, and DVD R/W Jumper. From this, two pins are shortened to make master and slave.

Note: To remove the password set on the CMOS when the computer is off, remove the lost CMOS jumper on the motherboard and reset it.

Fig: Jumper