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ST43401N/ND, ST43402ND User’s Manual, Rev. B 15
Power requirements
The voltage and current requirements for a single drive at cylinder 0 are shown
in Table 3. Ensure that your power supply meets these requirements.
Table 3. Single drive voltage and current requirements
Current without Internal Current with Internal
Terminator Terminator
Seeking Contin- Seeking Contin-
and uous and uous
Voltage Idle Reading Reading Idle Reading Reading
SCSI single-ended interface (ST43401N)
+5V 1.8A 1.9A 1.9A 1.8A 1.9A 1.9A
+12V 1.8A 1.8A 1.8A 1.8A 1.8A 1.8A
Watts 30.6W 31.1W 31.1W 30.6W 31.1W 31.1W
SCSI differential interface (ST43401ND)
+5V 1.9A 2.2A 2.3A
+12V 1.8A 1.8A 1.8A
Watts 31.1W 32.6W 33.1W
SCSI dual-port differential (ST43402ND)
+5V 3.0A 3.6A 3.7A
+12V 1.8A 1.8A 1.8A
Watts 36.6W 39.6W 40.1W
continued