Models: DK221A-34, DK211A-51, DK211A-54, DK211A-68, DK222A-54, DK212A-81, DK212A-10, DK223A-81, DK223A-11, DK213A-13, DK213A-18 When the drive is connected to the host bus, a Master/Slave setting is necessary to configure a drive as master or slave. The Master/Slave setting is established between drives on the interface connector by using jumper 0-2 (pin #A, B, D) The master drive is assigned to drive address 0, and the slave drive is assigned to drive address 1. (1) Master(or single) : If all of pins A, B, D are open, the drive is a Master (Drive Address 0 or single). <-- interface connector <-- PCB(Printed Circuit Board) (View from Interface Connector) (2) Slave : If jumper position A-B(marked) is used, the drive is a slave (Drive Address 1). <-- interface connector <-- PCB(Printed Circuit Board) (View from Interface Connector) (3) CSEL Selection : If jumper position B-D(marked) is used, Master/Slave setting is determined by the condition of CSEL signal (Pin #28). <-- interface connector <-- PCB(Printed Circuit Board) (View from Interface Connector) Recommended type of jumper socket Vender: KYOCERA ELCO CORPORATION Vender Part Number: 20-8387-002-005-801 or Equivalent