The C/D jumper is used to determine whether the drive is master (drive C) or slave (drive D). The drive is configured as a master (drive C) when jumped and as a slave (drive D) when not jumpered.
DSP & SS This pair of jumpers determines the signals on pin 39 of the interface connector.
|X||-spindle synchronizaation signal disabled on pin 39
-activity LED signal available on pin 39
-Must be in place for CAM/ATA drives.
|X||-spindle synchronization signal enabled on pin 39|
-activity LED signal disabled from pin 39
|-pin 39 floating|
|E1||Disable Spin Up until command received|
|CMOS Drive Parameters|
|Side: 6-32 UNC-2B .12 Max. Insertion
Bottom: 6-32 UNC-2B .25 Max. Insertion