Source voltage Description
+3.3 V PCI, PCI Express, audio, CK-410, ICH7R, super I/O, BIOS ROM, and on-board
logic
+5 V Storage (disk, optical, diskette), PCI, PCI Express, ICH7R, audio, keyboard/
mouse
+12 V-A PCI, PCI Express, and system fans
+12 V-B Storage (disk, optical, diskette), PCI Express x16 auxiliary connector
+12 VCPU Input to on-board regulator that supplies power for the CPU
-12 V PCI
5 VSB Sleep circuitry
Table 1-5 Max current per rail
Voltage rail Maximum continuous current
3.3 V 15 A
5 V 21 A
12 VCPU 15 A
12 V-A 15.5 A
12 V-B 11 A
V12N .3 A
5 VSB 2.0 A
WARNING! Do not exceed 110 watts of a 5-volt and 3.3-volt power combination.
Do not exceed 31.5 amps (378 W) of a 12-volt (CPU/A/B) power combination.
Do not exceed 460 watts of total continuous output power.
Power supply specifications
Table 1-6 Power supply specifications
Item Description
Power supply 460-W custom power supply (Wide Ranging,
Active PFC)
Operating voltage range 90-269 VAC
Rated voltage range
100-240 VAC 118 VAC
Rated line frequency 50-60 Hz 400 Hz
Operating line frequency range 47-66 Hz 393-407 Hz
Rated input current 7.4 A @ 100-240 VAC 7.4 A @ 118 VAC
Heat dissipation Typical 1121 BTU/hr..= (283 kg-cal/hr.)
6 Chapter 1 Product overview ENWW
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