A/C line input
mLine voltage: 100–240 volts AC, RMS single phase, automatically configured
mFrequency: 50–60 Hz
mPow er: 708 watts maximum

Power s upply

mSingle 325-watt on the 500 model; one or two 425-watt, hot-swappable
supplieson the 700 model
Current type 500 model 700 model
+3.3 V* 25.0 A 50.0 A
+5 V* 28.0 A 44.0 A
+12 V (normal) 11.0 A 13.0 A
+12 V (start up) 18.0 A (12 seconds maximum) 18.0 A (12 seconds maximum)
–12 V 100 mA 100 mA
*+3.3 and +5 power outputs are traded off; total power for both not to exceed 180 watts for the
500 model, 260 watts for the 700 model.
Clock/Calendar
mCMOS custom circuitry with long-life lithium battery
Keyboard
mSupports Apple ADB keyboards (an extended keyboard is recommended)
WARNING
If the clock begins to lose accuracy, see an Apple-authorized
dealer or service provider for a battery replacement. Do not attempt to
replace the clock battery yourself.
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