COOLER MASTER MWE 550 V3 550W 80 Plus Bronze Non Modular ATX 3.1 Power Supply

The Cooler Master MWE 550 V3 is a 550-watt ATX form-factor power supply built to the ATX 12V Version 3.1 specification, making it fully compliant with the 12V-2x6 connector standard required by modern discrete graphics cards including 40-series GPUs. ATX 3.1 compliance enables the unit to handle peak power transients up to 1.5 times the rated wattage, reducing the risk of shutdowns during GPU boost cycles. Efficiency is certified at 80 Plus Bronze EU 230V, delivering greater than 88% efficiency at typical load. The unit draws from a 200–240 V input range at 50–60 Hz with Active PFC, and it meets ErP 2014 Lot 3 requirements for standby energy consumption. A DC-to-DC plus LLC circuit topology helps maintain stable voltage regulation across the 12 V, 5 V, and 3.3 V rails. Cooling is handled by a 120 mm Hydrodynamic Bearing (HDB) fan. HDB fans use a fluid-film bearing design that reduces friction and operational noise compared to sleeve-bearing alternatives, while supporting extended service life. The unit is rated for continuous operation between 0 °C and 40 °C. The non-modular cable harness features an embossed texture for improved grip and easier routing. The full connector set includes one ATX 24-pin motherboard connector, two EPS 8-pin/4+4-pin CPU connectors, two PCIe 6+2-pin connectors, six SATA connectors, and three peripheral 4-pin connectors — sufficient for mainstream gaming and productivity builds. Protection circuitry covers under-voltage (UVP), over-voltage (OVP), over-power (OPP), over-temperature (OTP), and short-circuit (SCP) scenarios. Mean time between failure is rated at greater than 100,000 hours. The power good signal window is 100–150 ms and hold-up time exceeds 16 ms, both consistent with ATX specification requirements. Regulatory certifications include TUV, CE, FCC, CCC, EAC, RCM, UKCA, RoHS 2.0, BIS, and KC depending on region. Verified Specifications: - Model: MPE-5501-ACABW-3BIN - Wattage: 550 W - ATX Version: ATX 12V Ver. 3.1 - Efficiency: >88% @ Typical Load | 80 Plus Bronze EU 230V - Input Voltage: 200–240 V | Input Current: 5 A | Frequency: 50–60 Hz - PFC: Active | ErP 2014 Lot 3: Yes - Fan: 120 mm HDB - Connectors: 1× ATX 24-pin, 2× EPS 8/4+4-pin, 2× PCIe 6+2-pin, 6× SATA, 3× Peripheral 4-pin - Protections: UVP, OVP, OPP, OTP, SCP - MTBF: >100,000 Hours - Operating Temperature: 0–40 °C - Dimensions: 140 × 150 × 86 mm - Modular: Non-Modular - Warranty: 5 Years