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Cooler Master MasterWatt 550 550W ATX Black power supply unit

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MasterWatt 550, ATX 12V V2.4, 100-240V AC, 100-500 ms, 85%, Black
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Cooler Master MasterWatt 550. Total power: 550 W, AC input voltage: 100 - 240, AC input frequency: 50 - 60. Fan diameter: 12 cm, Number of fans: 1 fan(s). Motherboard power connector: 24-pin ATX, Motherboard power cable length: 55 cm, SATA power cable length: 620,500,860 mm. Purpose: PC, Power supply unit (PSU) form factor: ATX, Bearing technology: LDB. Colour of product: Black

Semi-fanless Modular
80 PLUS Bronze Certified Power Supply
The MasterWatt is an 80 Plus Bronze power supply with an innovative semi-fanless mode. Under 15% load,the MasterWatt fan remains idle,offering zero dBA. When demand for power increases,a gradual fan curve provides measured cooling with little to no noise at any output level. Dual forward / DC-to-DC topology is employed to keep the voltage stable in all conditions. For increased performance,MasterWatt is equipped with 16 AWG power cables,which reduces resistance,thereby increasing efficiency.

80 PLUS Bronze Certified
The 80 PLUS Bronze certification guarantees that MasterWatt delivers an average efficiency of 85%.

Durable LDB Bearing
Sealant on the bobbin and featuring the highest dustproof level IP6XSealant on the The groove outside of the bearing helps to circulate the oilRecycle slot adds extra storage space for the oilThe shaft makes the oil flow by pumping it while spinningCooler Master 120mm Silencio FP fan combines sealed LDB bearings with quiet fan blades offering a long lifetime of quiet cooling.

Semi-Fanless up to 15% load
MasterWatt Operates at 0dB under 15% load.Experience noise-free basic computing.

Dual Forward and DC-to-DC Circuit Design
More Conductive PCI-e CablesThe Dual Forward and DC-to-DC circuit design offers reliability and stability. This is especially significant in +3.3V and +5V outputs.

More Conductive PCI-e Cables
The Dual Forward and DC-to-DC circuit design offers reliability and stability. This is especially significant in +3.3V and +5V outputs.The MasterWatt uses 16AWG cables for PCI-e cables. Less resistance and better efficiency,providing you a safer user environment.
More Information
Manufacturer Cooler Master
GTIN 00884102034992
Cubic Weight 3.5000
upc 4719512053119
Total power 550 W
AC input voltage 100 - 240
AC input frequency 50 - 60
Input current 4 - 8
Power Factor Correction (PFC) type Active
Combined power (+3.3V) 110 W
Combined power (+12V) 550 W
Combined power (+5V) 110 W
Combined power (-12V) 3.6 W
Combined power (+5Vsb) 15 W
Max output current (+3.3V) 20 A
Max output current (+12V) 45.8 A
Max output current (+5V) 20 A
Max output current (-12V) 0.3 A
Max output current (+5Vsb) 3 A
Power Good signal delay range 100 - 500 ms
Hold time 16 ms
Power protection features Over current, Over power, Over voltage, Short circuit, Under voltage
Efficiency 85%
Fan diameter 12 cm
Number of fans 1 fan(s)
Motherboard power connector 24-pin ATX
Motherboard power cable length 55 cm
Number of SATA power connectors 6
SATA power cable length 620,500,860 mm
Peripheral (Molex) power connectors (4-pin) 2
Peripheral (Molex) power cable length 620,500 mm
PCI Express power connectors (6+2 pin) 2
PCI Express power cable length 67 cm
CPU power connector (4+4 pin) Yes
CPU power cable length 60 cm
Floppy drive power connector 1
Floppy disk drive connector Yes
Purpose PC
Power supply unit (PSU) form factor ATX
ATX version 2.4
Bearing technology LDB
Mean time between failures (MTBF) 100000 h
Colour of product Black
Operating temperature (T-T) 0 - 40 °C
Width 150 mm
Depth 140 mm
Height 86 mm
Weight 1.61 kg
80 PLUS certification 80 PLUS Bronze
Certification CCC, CE, TUV-RH, RCM, EAC, cTUVus, FCC, BSMI, KC,CB