Dell PowerEdge R420 Getting Started Guide - Page 7

Power AC Power Supply (per power supply) Wattage 350 W and 550 W Heat dissipation NOTE: Heat dissipation is calculated using the power supply wattage rating. 1356 BTU/hr maximum (redundant, 350 W power supply) 2132 BTU/hr maximum (redundant, 550 W power supply) 2315 BTU/hr maximum (non-redundant, 550 W power supply) Voltage 100-240 V AC, autoranging, 50/60 Hz NOTE: This system is also designed to be connected to IT power systems with a phase to phase voltage not exceeding 230 V. Battery Coin-cell battery 3 V CR2032 Lithium coin cell Physical Height Width With rack latches Without rack latches Depth (excludes bezel) Weight (maximum) Weight (empty) 42.8 mm (1.68 inch) 482.4 mm (18.99 inch) 434.0 mm (17.08 inch) 607.0 mm (23.9 inch) 19.9 kg (43.87 lb) 16.73 kg (36.88 lb) Environmental NOTE: For additional information about environmental measurements for specific system configurations, see dell.com/environmental_datasheets. Temperature Operating Continuous operation: 10 °C to 35 °C at 10% to 80% relative humidity (RH), with 26 °C max dew point. De-rate maximum allowable dry bulb temperature at 1 °C/300 m above 900 m (1 °F per 550 ft). NOTE: For information on supported expanded operating temperature range and configurations, see support.dell.com/ manuals. Storage Relative humidity -40 °C to 65 °C (-40 °F to 149 °F) with a maximum temperature gradation of 20 °C per hour 7