Connectors
The electrical connectors are located as
shown.
Pin 1
Electrical Connectors (rear view) 80 Pin SCA models
Power Pin 1
4 3 2 1
Pin 2
Pin 35
SCSI Pin 1
Aux Connector Pin 1
Electrical Connectors (rear view) 68 Pin models
4 3 2 1
Power Pin 1
SCSI Pin 1
Electrical Connectors (rear view) 50 Pin models
Pin 1
(15X)2 mm
2.54 mm*
Jumper Pin locations (front view) - all models
* Not available on 80 Pin SCA
Note: See electrical interface specifications
for power pin assignment.
The DC power connector is designed to mate
with AMP part 1-480424 (using AMP pins P/N
350078-4). Equivalent connectors may be
used.
Pin assignments are shown below, as viewed
from the end of the drive.
4
3
2
1
Pin
Voltage
1
+12 V
2
GND
3
GND
4
+5 V
Option Block
Jumper Settings
Jumper position and function are as shown below. Pin pitch is 2mm.
Termination power enable 2.54mm pitch.
0
1
Reserved
Reserved
10 12 14 16 18
Ground
Ground
Ground
Termination
Power Enable
1
3
5
7
11 13 15 17 19 21 23 25 27 29 31
2
4
6
8
20 22 24 26 28 30 32
Enable Active Termination
+5V
2
SCSI
Address
Not
Used
Blank
Ground
External Activity LED
Write Protect
Auto Start Delay
Disable Sync Negotiations
Disable SCSI Parity
Disable Unit Attention
Reserved
Reserved
Reserved
Auto Start
50 Pin Single Ended Front Option Block and TermPower Block.
Reserved
Reserved
Ground Ground
Ground
Termination
Power Enable
1 3
5
7
11 13 15 17 19 21 23 25 27 29 31
2 4
6
8 10 12 14 16 18 20 22 24 26 28 30 32
Enable Active Termination
+5V
0
1
2
SCSI Address
Blank
Auto Start
Ground
External Activity LEDWrite Protect
Auto Start Delay
Disable Sync Negotiations
Disable SCSI Parity
Disable Unit Attention
3
Disable Wide
Negotiations
Reserved
Reserved
68 Pin Single Ended Front Option Block and TermPower Block.
68 Pin Differential Option Jumper Block.
Ground
Ground
1 3
5
7
11 13 15 17 19 21 23 25 27 29 31
2 4
6
8 10 12 14 16 18 20 22 24 26 28 30 32
+5V
0
1
2
SCSI Address
Blank
Auto Start
Ground
External Activity LED
Write Protect
Auto Start Delay
Disable Sync Negotiations
Disable SCSI Parity
Disable Unit Attention
3
Disable Wide
Negotiations
Reserved
Reserved
Reserved
80 Pin SCA-2 Front Option Jumper Block.
