Lenovo ThinkCentre A70 Hardware Maintenance Manual page 38

Non-operating: -50 to 35 000 ft (-15.2 to 10 668 m)
Electrical input
• Input voltage:
– Low range:
Minimum: 100 V ac
Maximum: 127 V ac
Input frequency range: 50 to 60 Hz
Voltage-selection switch setting: 115 V ac
– High range:
Minimum: 200 V ac
Maximum: 240 V ac
Input frequency range: 50 to 60 Hz
Voltage-selection switch setting: 230 V ac
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ThinkCentre Hardware Maintenance Manual