Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 45)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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9.0 DC Power Requirements
The following voltage specification applies at the drive power connector. Connections to the drive should be made in a safety
extra low voltage (SELV) circuit. There is no power on or power off sequencing requirement.
Adequate secondary over-current protection is the responsibility of the system.
Table 19: Input Voltage and capacitance
Note: -8% is acceptable during spin up, but the spin up time is not guaranteed.
Tolerance
Absolute Max
Spike Voltage
Supply Rise Time Capacitance
+5 Volts Supply +/- 5% 5.5 V 0-200 ms 96 uF
+12 Volts Supply +/- 5% 15 V 0-400 ms 100 uF