Lenovo ThinkCentre 3656 Hardware Maintenance Manual page 47

For all machine types
Environment
Air temperature:
Operating: 10° to 35°C (50° to 95°F)
Non-operating: -40° to 60°C (-40° to 140°F)
Humidity:
Operating: 10% to 80% (10% per hour, non condensing)
Non-operating: 10% to 90% (10% per hour)
Maximum altitude:
Operating: -50 to 10,000 ft (-15.2 to 3048 m)
Non-operating: -50 to 35,000 ft (-15.2 to 10.668)
Electrical input
Input voltage:
Low range:
Minimum: 100 V ac
Maximum: 127 V ac
Input frequency range: 50/60 Hz
Voltage switch setting: 115 V ac
High range:
Minimum: 200 V ac
Maximum: 240 V ac
Input frequency range: 50/60 Hz
Voltage switch setting: 230 V ac
Chapter 3. General information
41