M3425 DIP SWITCH SETTINGS In order to set your 3425 drive to oprate as drive C: or as D: You need to locate the 8 pin dip switch located on the back of the PCB. The proper settings ars as follows... 1) DRIVE C: PINS 1-4 ON, 5,6, AND 7 OFF, AND 8 ON 2) DRIVE D: PINS 1-4 ON 5 AND 6 OFF, 7 ON , AND 8 OFF NOTE: IF YOU ARE USING A TWISTED CABLE THEN YOU NEED TO SET YOUR DRIVE UP AS D: (SEE ST506 CABLING)