QuickSpecs

Unit Environment and Operating Conditions
General Unit Operating Guidelines
Keep the computer away from excessive moisture, direct moisture and the extremes of heat and cold, to ensure that unit is
operated within the specified operating range.
Leave a 10.2 cm (4 in) clearance on all vented sides of the computer to permit the required airflow.
Never restrict airflow into the computer by blocking any vents or air intakes.
Do not stack computers on top of each other or place computers so near each other that they are subject to each other's re-
circulated or preheated air.
Occasionally clean the air vents on the front, back, and any other vented side of the computer. Lint, dust and other foreign
matter can block the vents and limit the airflow.
If the computer is to be operated within a separate enclosure, intake and exhaust ventilation must be provided on the enclosure,
and the same operating guidelines listed above will still apply.
Temperature Range Operating: 50° to 95° F (10° to 35° C) *
Non-operating: –22° to 140° F(–30° to 60° C)
Relative Humidity Operating: 10% to 90% (non-condensing at ambient)
Non-operating: 5% to 95% (non-condensing at ambient)
Maximum Altitude
(unpressurized)
Operating: 10,000 ft (3048 m)
Non-operating: 30,000 ft (9144 m)
*Operating temperature is de-rated 1.0 deg C per 300 m (1000 ft) to 3000 m (10,000 ft) above sea level, no direct sustained sunlight.
Maximum rate of change is 10 deg C/Hr. The upper limit may be limited by the type and number of options installed.
Power Supply
Standard Efficiency 240W active PFC
70% @ 100% load
High Efficiency 240W active PFC
82/85/82% @ 20/50/100% load
Max Power Rating 240W
Power Factor Correcting (PFC) Active
Rated Line Frequency 50/60 Hz
Operating Line Frequency
Range
47 – 63 Hz
Maximum Voltage Range 115 VAC: 90 - 140 VAC
220VAC: 180 - 264 VAC
Nominal Voltage Range 115 VAC: 100 - 127 VAC
220VAC: 200 - 240 VAC
Rated Input Current =4A
Maximum allowable leakage
Current (NFPA 99)
275 µA
Power Supply Fan 92mm variable speed
*High efficiency power supply is a requirement for ENERGY STAR qualification in conjunction with a select range of processors and
modules
QuickSpecs
HP Compaq Pro 4300 Small Form Factor Business PC
Technical Specifications – Power
DA - 14288 North America — Version 16 — June 12, 2013 Page 49