Drive HDA (rear view, PCB facing downward)
Pin 1 | +5V Ground | J5 | [1] [2] |
Pin 1 |
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4P | 3P 2P | 1P |
68 Pin
SCSI I/O Connector
J1
SCSI ID = 0
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
SCSI ID = 8
SCSI ID = 9
SCSI ID = 10
SCSI ID = 11
SCSI ID = 12
SCSI ID = 13
SCSI ID = 14
SCSI ID = 15
[2]
(default)
PCB
For ID selection use jumpers as shown or connect a cable for remote switching as shown below.
Reserved A 3 A 2 A 1A 0
Pins 1, 3, 5, and 7 are optional connections to
Host | N.C. |
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Alternate |
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11 | 9 | 7 | 5 | 3 | 1 | ||
Usage Plug | |||||||
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[4]
+5V 
12 10 8 6 4 2
+5V N.C. Ground
Drive Activity LED
A0 A1 A2 A3
switching circuits in host equipment to establish drive ID.
Remote Switches
Pins 2, 4, 6, and 8 are normally not grounded. They are driven low (ground) for 250 ms after a Reset
or PWR ON to allow drive to
[4]Dashed area is optional host circuitry (external to the drive) connected to host supplied optional usage plug.
read SCSI ID selected.
Figure 10. J5 jumper header (on LW models only)
40 | Cheetah 15K.5 SCSI Product Manual, Rev. J |
