Dell Dimension 4500 - Manual (Page 52)

Power Supply
The 250-W power supply can operate from an AC power source of 115 VAC at 60 Hz or 230 VAC at 50 Hz. The power supply provides the DC operating
voltages and currents listed in the following table.
DC Power Connectors
Power Supply DC Connector Pin Assignments
Output Voltage 1 Regulation Minimum Current (A) Maximum Current (A) 2
+12 VDC +/–5% 0.0 14.0 3
+5 VDC +/–5% 1.0/0.2 4 22.0
+3.3 VDC +/–5% 0.1/0.0 5 18.0
– 12 VDC +/–10% 0.0 1.0
+5 VFP +/–5% 0.0 2.0
1 Outputs meet and do not exceed SELV requirements per electrical standards (UL 1950, IEC 950, or EN60950 Par. 2.3).
2 Maximum continuous combined load on +5 VDC and +3.3 VDC outputs do not exceed 150 W.
3 Peak +12 VDC output power (up to 15.0 A) does not exceed 15 seconds in duration. Under this condition, tolerance on the +12 VDC output is allowed to
be +–10%.
4 +5 VDC minimum load is 0.2 A when there is a minimum load of 0.3 A on the +12 VDC and 0.42 A on the +3.3 VDC outputs simultaneously. +5 V minimum
load is 1 A for load transient tests.
5 In system configurations where +3.3 VDC is not used, all other outputs stay within regulation while the +3.3 VDC output is in a zero load condition.