Models: DTCA-23240 and DTCA-24090

A jumper is available at the interface connector to determine the drive address.  Using cable selection, the drive address depends on the condition of pin 28 of the AT interface cable. In the case when pin 28 is ground or low, the drive is a master. If pin 28 is open or high level, the drive is a slave. The default setting of jumper at shipment is No Jumper (Master).