The MasterWatt 550 550W 80 Plus Bronze Semi-Modular Power Supply by Cooler Master is a reliable choice for your system’s power needs. With a standard ATX size, it can deliver up to 550W of power and includes all the necessary cables for a typical single graphics card build. Designed for stability and reliability, this power supply operates quietly and incorporates multiple protection technologies to ensure smooth operation for your system.
Cooler Master MasterWatt 550 Specs
Connectivity
| Total Connectors | 1 x 20+4-Pin ATX Motherboard 1 x 4+4-Pin EPS CPU 6 x 15-Pin SATA 2 x 4-Pin Peripheral / Molex 1 x 4-Pin Floppy 2 x 6+2-Pin PCIe |
| Cable Design | Semi-Modular |
Electrical
| Total Wattage | 550 W |
| Combined Power for +12 V | 550 W |
| Max Load for +12 V | 45.8 A |
| Combined Power for +3.3/+5 V | 110 W |
| Max Load for +3.3 V | 20 A |
| Max Load for +5 V | 20 A |
| Max Power for +5 Vsb | 15 W |
| Max Load for +5 Vsb | 3 A |
| Max Power for -12 V | 3.6 W |
| Max Load for -12 V | 0.3 A |
| Peak Power | 750 W |
| AC Input Power | 100 to 240 VAC, 50 / 60 Hz |
General
| Efficiency Rating | 80 PLUS Bronze |
| Active Power Factor Correction | Yes |
| Efficiency | 85% |
| Hold up Time | 16 ms at 80% Load |
| Power-Good Signal | 100 to 500 ms |
Cooling
| Fan Size | 120 mm |
| Bearing Type | Loop Dynamic Bearing (LDB) |
Environmental
| Operating Temperature | 32 to 72°F / 0 to 40°C |
Physical
| Form Factor | ATX |
| Compliance | ATX 12 V v2.4 |
| Protection | Over-Current Protection, Over-Power Protection, Over-Voltage Protection, Short-Circuit Protection, Under-Voltage Protection |
| Certifications | BSMI, CB, CCC, CE, EAC, FCC, RCM, TUV, cTUVus *as per Manufacturer |
| Mean Time Between Failures (MTBF) | 100,000 Hours |
| Dimensions | 5.9 x 5.5 x 3.4″ / 150 x 140 x 86 mm |
