Adaptec ATA II 1220SA - Manual (Page 69)

Appendix E: Technical Specifications ●
69
Environmental Specifications
Note: Forced airflow is recommended, but not required.
DC Power Requirements
Current Requirements
Ambient temperature without battery
backup module 0 °C to 50 ° C
Relative humidity 10% to 90%, noncondensing
Altitude up to 3,000 meters
Ripple and noise 50 mV peak-to-peak (max)
DC Voltage 3.3 V ± 10%
Adaptec Model Maximum Current (A)
AAR-1430SA 1.5A
AAR-1420SA 1.5A
AAR-1220SA 1.5A