Cooler Master MasterWatt Lite

SKU: MPX-4001-ACABW-UK Brand: Cooler Master
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Cooler Master
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Product Description

- 80 Plus EU (230V) certified 85% efficiency
- APFC + PWM combined with dual forward topology to increase stability and performance
- Green power design to meet ErP 2013 Lot6 & new CE energy saving regulation
- Silent 120mm HDB fan with intelligent fan-speed control, to
- enhance longevity and help reduce noise in power unit.
- Fully protection (OCP/OVP/SCP/OPP)
- with build-in Over Temperature Protection (OTP)


Nominal power400 W
AC input voltage200 - 240 V
AC input frequency47 - 63 Hz
Input current3.5 - 5
Power Factor Correction (PFC) typeActive
Hold time10 ms
Power protection featuresOver current, Over power, Over voltage, Overheating, Short circuit
Power Good signal delay range100 - 500 ms
Overheat protectionYes
Fan diameter12 cm
Number of fans1
Cooling typeActive
Ports & interfaces
Motherboard power connector20+4 pin ATX
Number of SATA power connectors6
Peripheral (Molex) power connectors (4-pin)3
PCI Express power connectors (6+2 pin)1
CPU power connector (4+4 pin)Yes
Floppy disk drive connectorYes
Form factorATX
ATX version2.31
On/off switchYes
Mean time between failures (MTBF)100000 h
Colour of productBlack
Weight & dimensions
Width150 mm
Depth140 mm
Height86 mm
80 PLUS certification80 PLUS
CertificationTUV, CE, BSMI, FCC, cTUV-Rhus, KC, CCC,
Cooler Master

About Cooler Master

Cooler Master contact information

For after-sales support and information relating to products from Cooler Master, please contact Cooler Master on:

Cooler Master was founded with the mission of providing the industry's best thermal solutions. Since its establishment a decade ago, the company has remained faithful to this mission, emerging as a world leader in products and services for companies dealing with devices where heat issues must be resolved.

In pursuing this mission, Cooler Master is absolutely committed to delivering solutions that precisely meet customer requirements for features, performance, and quality. Moreover, we strive to be a reliable long-term partner for our customers that they can truly depend on. It aims to be the first and foremost name that comes to mind for companies around the world seeking thermal solutions, and seeks to build such a reputation through outstanding technology, sophisticated design, and superior service.

Cooler Master's current business encompasses a comprehensive lineup of thermal solutions for a full range of applications. Its products range from heat sinks and fans to component housing, chassis, and ducting for computers, industrial machinery, telecommunications equipment, and many other devices.

A critical component of Cooler Master's ability to successfully pursue its mission is an unstinting commitment to quality, as demonstrated by the ISO 9001 certification granted to its main manufacturing plant in Taiwan. It has also enforced ISO guidelines and is in the process of applying for ISO 9002 certification at its second and third plants, located in China. Cooler Master has also implemented a number of analytical and testing protocols to ensure top quality, including at subcontractors, to further ensure thorough quality control. Moreover, Cooler Master's dedication to quality extends beyond manufacturing to every aspect of its operation, including service.

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