According to my Emulex SC31 manual: Pins Lo/Hi Signal (Tag 3 Function) From/To ----------------------------------------------------------------------------------------------------------------------- A Cable: 22,52 Unit Select Tag To 23,53 Unit Select Bit 0 To 24,54 Unit Select Bit 1 To 26,56 Unit Select Bit 2 To 27,57 Unit Select Bit 3 To 1,31 Tag 1 To 2,32 Tag 2 To 3,33 Tag 3 To 4,34 Bit 0 (Write Gate) To 5,35 Bit 1 (Read Gate) To 6,36 Bit 2 (Servo Offset Plus) To 7,37 Bit 3 (Servo Offset Minus) To 8,38 Bit 4 (Fault Clear) To 9,39 Bit 5 (AM Enable) To 10,40 Bit 6 (Return To Zero) To 11,41 Bit 7 (Data Strobe Early) To 12,42 Bit 8 (Data Strobe Late) To 13,43 Bit 9 (Release) To 30,60 Bit 10 To 14,44 Open Cable Detect To 15,45 Fault From 16,46 Seek Error From 17,47 On Cylinder From 18,48 Index From 19,49 Unit Ready From 20,50 Address Mark Found From 21,51 Busy (dual port only) From 25,55 Sector From 28,58 Write Protected From 29 Power Sequence Hold To 59 Power Sequence Pick To B Cable: 8,20 Write Data To 6,19 Write Clock To 2,14 Servo Clock From 3,16 Read Data From 5,17 Read Clock From 10,23 Seek End From 22,9 Unit Selected From 12,24 Index From 13,26 Sector From Please excuse any typos... --tom At 08:49 PM 3/3/2003 -0500, you wrote: