Back in the days of PATA hard drives, a person used jumpers on the drive to indicate whether the drive was the master or the slave of the channel, or to let the cable select which drive was which.
SATA drives are one-per-channel, one-per-cable, etc.
What are the jumpers for on SATA hard drives?
Best Answer
Some SATA drivers have jumpers for extra features, or for troubleshooting.
Example from the manual of a Western Digital SATA disk: