MICROPOLIS 4743SS
Device Type |
Hard Drive |
Interface |
Ultra SCSI |
Size |
3.5 in. third height |
View |
Bottom |

DRIVE SELECTION (J2) |
SCSI ID |
Pins 3 & 4 |
Pins 5 & 6 |
Pins 7 & 8 |
Pins 9 & 10 |
0 |
open |
open |
open |
open |
1 |
closed |
open |
open |
open |
2 |
open |
closed |
open |
open |
3 |
closed |
closed |
open |
open |
4 |
open |
open |
closed |
open |
5 |
closed |
open |
closed |
open |
6 |
open |
closed |
closed |
open |
7 |
closed |
closed |
closed |
open |
8 |
open |
open |
open |
closed |
9 |
closed |
open |
open |
closed |
10 |
open |
closed |
open |
closed |
11 |
closed |
closed |
open |
closed |
12 |
open |
open |
closed |
closed |
13 |
closed |
open |
closed |
closed |
14 |
open |
closed |
closed |
closed |
15 |
closed |
closed |
closed |
closed |
CONNECTIONS |
Function |
Label |
LED connector |
J2/pins 1 & 2 |
USER CONFIGURABLE SETTINGS (J2) |
Function |
Label |
Position |
Write protect disabled |
Pins 15 & 16 |
open |
Write protect enabled |
Pins 15 & 16 |
closed |
Parity enabled |
Pins 17 & 18 |
open |
Parity disabled |
Pins 17 & 18 |
closed |
Factory configured - do not alter. |
Pins 19 & 20 |
unidentified |
Factory configured - do not alter. |
Pins 21 & 22 |
unidentified |
Factory configured - do not alter. |
Pins 23 & 24 |
unidentified |
Factory configured - do not alter. |
Pins 25 & 26 |
unidentified |
Factory configured - do not alter. |
Pins 27 & 28 |
unidentified |
SPINDLE MOTOR SELECTION (J2) |
Setting |
Pins 11 & 12 |
Pins 13 & 14 |
Spindle motor starts on power-up |
open |
open |
Spindle motor starts on command only |
closed |
open |
Spindle motor start delayed by 12 sec x drive
ID |
open |
closed |
QUANTUM
CORPORATION
QUANTUM 420AT, 635AT, 850AT (TRAILBLAZER)
QUANTUM 540AT, 640AT, 1080AT, 1280AT (FIREBALL)
Interface: |
IDE(AT) |
Size: |
3.5 in. third height |
View: |
Bottom |

DRIVE CONFIGURATION |
Selection |
|
DS |
SP |
|
Drive is master |
|
closed |
open |
|
Slave drive in a two drive system |
|
open |
open |
|
Master drive when non-CAM drive is slave |
|
closed |
closed |
|
Drive is master (cable select enabled) |
|
N/A |
open |
|
Slave in a two drive system (cable select
enabled) |
|
N/A |
open |
|
Master drive when non-CAM drive is slave
(cable select enabled) |
|
N/A |
closed |
|
Note: When configuring master/slave with the Cable Select jumper
(CS), a cable that provides the correct signal to pin 28 needs to be used. |