The fan on this unit has started "squeaking". I have a Mass Cool 120 mm fan, model no. FD12025B1L3/4. Can I replace the old fan with this one or is there something special about the fan in this power supply?

I wouldn't recommend replacing the fan in the unit. They are dangerous to open unless you are skilled and know what you are doing. The unit itself it fairly inexpensive, you can consider replacing it. But working on it, I wouldn't work on a psu and most certainly wouldn't replace a part that isn't approved by the maker. Also : They come with a relatively long warranty, you should be able to replace the fan, if not the entire unit. Contact the manufacturer for answers on that.

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Cooler Master Extreme Power Plus - 550W Power Supply

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ATX12V V2.3
110 ~ 115V / 220 ~ 230V
1 x 120mm fan

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The Extreme Power Plus RS-550-PCAR-E3 pushes out 550W of power to handle your system's thirst for juice and supports dual +12V1 and +12V2 outputs for higher power usage. It provides over 70% efficiency at typical load operation. With a life-time of 100,000 hours and protections for OVP/UVP/OTP/OPP/SCP, this power unit is made to last.

ATX12V v2.3 CompatibleCompatible with the Intel ATX12V v2.3 standard, the Cooler Master eXtreme Power Plus RS-550-PCAR-E3 provides maximum power stability to drive the latest Intel and AMD processors as well as other system components.
Silent, Efficient CoolingAn ultra-silent 120mm fan with intelligent speed control provides superior cooling performance to dissipate heat in the power supply enclosure while running quietly. In addition, the ventilation channels on the back panel of the power supply enhance cooling efficiency.
Green power designGreen power design meets energy star and blue angel requirements and also provides you with valuable equipment at low cost.

Type	ATX12V V2.3
Maximum Power	550 W
Fans	1 x 120mm fan
PFC	No
Main Connector	20+4Pin
+12V Rails	2
PCI-Express Connector	2 x 6+2-Pin
SATA Power Connector	6
SLI	SLI Ready
Haswell Support	Yes
CrossFire	CrossFire Ready
Modular	No
Power Good Signal	100-500ms
Hold-up Time	17ms min.
Efficiency	70% Typically
Over Voltage Protection	Yes
Input Voltage	110 ~ 115V / 220 ~ 230V
Input Frequency Range	47 - 63 Hz
Input Current	8A@115Vac / 6.3A@230Vac
Output	+3.3V@25A, +5V@25A, +12V1@16A, +12V2@16A, [email protected], [email protected], [email protected]
MTBF	>100,000 Hours
Approvals	Nemko, TUV, UL, CE, BSMI, FCC, GOST, C-tick
Connectors	1 x Main connector (20+4Pin) 1 x 4+4 Pin CPU 3 x Peripheral 6 x SATA 1 x Floppy 2 x PCI-E

Cooler Master Extreme Power Plus - 550W Power Supply

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Brand	Cooler Master
Series	eXtreme Power Plus
Model	RS-550-PCAR-E3

Item#: N82E16817171038

Cooler Master Extreme Power Plus - 550W Power Supply

Learn more about the Cooler Master RS-550-PCAR-E3

Customer Reviews of the Cooler Master RS-550-PCAR-E3

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info