Cooler Master MasterWatt 550W Modular Desktop Power Supply

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.

Durable LDB Bearing
Cooler Master 120mm Silencio FP fan combines sealed LDB bearings with quiet fan blades offering a long lifetime of quiet cooling.

Dual Forward and DC-to-DC Circuit Design
The 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 MasterWatt uses 16AWG cables for PCI-e cables. Less resistance and better efficiency,providing you a safer user environment.

Specifications:
Product Name: MasterWatt 550
Product Number: MPX-5501-AMAAB
Type: ATX 12V V2.4
PFC: Active PFC
Operation Voltage: 100-240 Vac
Input Voltage: 100-240 Vac
Input Current: 8-4 A
Input Frequency: 50-60 Hz
Dimensions (LxBxH): 140 x 150 x 86 mm
Fan Size: 120 mm
Fan Bearing: LDB
Power Good Signal: 100-500 ms
Hold Up Time: 16ms at 80% load
Efficiency: 85% @ Typical Load
ErP 2013 Lot 6: Yes
MTBF: >100,000 hours
Operating Temperature: 0 ~ 40C
Protections: OCP / OVP / UVP / OPP / OTP / SCP
Regulatory: CCC, CE, TUV-RH, RCM, EAC, cTUVus, FCC, BSMI, KC, CB
Connectors
MB 24 Pin: 1
CPU 12V 4+4 Pin: 1
SATA: 6
Peripheral 4 Pin: 2
FDD Cable 4 Pin: 1
PCI-e 6+2 Pin: 2

***Please confirm stock availability before placing your order.***