How are "jumpers" used? - Electrical Engineering Stack Exchange
Jumpers
Hard Drive Jumper (2.54mm Connector) for 3.5 inch Hard Disk 100pcs/bag - PI Manufacturing
What is a Jumper?
Amazon.com: DGZZI 2 Pins Single Female to Dual Male Black Jumper for PC Motherboard Power Light-Emitting Diode Switch Reset HDD Hard Drive 4PCS : Electronics
Standard Micro Jumpers for Hard Drives, 24 Pack: Hard Drive Jumpers: Amazon.com: Industrial & Scientific
2.54mm 0.1 Pitch 2-pin Jumper Cable - 20cm long : ID 4934 : $0.75 : Adafruit Industries, Unique & fun DIY electronics and kits
Jumper Caps
PAIR 2.5mm 2-Pin Jumper for IDE SCSI DVD CD HDD Motherboard