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MICROPOLIS CORPORATION

MICROPOLIS 4221, 4221AV

Interface: SCSI-2 Fast
Size: 3.5 in. third height
View: Bottom

DRIVE SELECTION
Drive Number ID0 ID1 ID2
0 open open open
     1 closed open open
     2 open closed open
     3 closed closed open
     4 open open closed
     5 closed open closed
     6 open closed closed
     7 closed closed closed
Note: only one set of ID jumpers should be used at any time.

 
CONNECTIONS
Purpose Location
External LED connector LED1

 
USER CONFIGURABLE SETTINGS
Function Location Setting
Front LED disabled LED2 open
     Front LED enabled LED2 closed
Spindle sync termination disabled MS & SS closed
     Spindle sync termination enabled MS & SS open
SCSI parity check enabled PTY open
     SCSI parity check disabled PTY closed
Drive is sole drive or at end of chain RN1 & RN2 installed
     Drive is not sole drive or at end of chain RN1 & RN2 not installed
Write protect disabled WP open
     Write protect enabled WP closed

 
SPINDLE MOTOR CONFIGURATION
Function SP0 SP1
Spindle motor starts on power-up open open
     Spindle motor starts on command only closed open
     Spindle motor delay by 12sec. xSCSI ID open closed

 
TERMINATION POWER SETTINGS
Setting W1 W2 W3
TERMPWR supplied by drive closed open N/A
     TERMPWR supplied by SCSI interface pin 26 open closed N/A
     TRMPWR supplied by drive to bus pin 26 N/A N/A closed

 

MICROPOLIS 4525A (VER. 1), 4540A (VER. 1), 4550A (VER. 1)

Device Type Hard Drive
Interface EIDE
Size 3.5 in. third height
View Bottom

DRIVE CONFIGURATION
Setting JP1/C JP1/D JP1/E
Single drive only open closed open
     Drive is master in two drive system closed closed open
     Drive is slave in two drive system open open open
     Master/Slave determined by Cable Select open open closed

 
MISCELLANEOUS TECHNICAL NOTES
Function of J1B, JP1/A, and JP1/B is unidentified.

 
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