MasterWatt 90 - Power supply COOLER MASTER - Free user manual and instructions
Find the device manual for free MasterWatt 90 COOLER MASTER in PDF.
Pick your language and provide your email: we'll send you a specifically translated version.
| Product Type | ATX Power Supply Unit |
| Brand | Cooler Master |
| Model | MasterWatt 90 Series |
| Wattage | 550W |
| Efficiency Rating | 80+ Gold |
| Modular Design | Semi-modular |
| Fan Size | 120 mm |
| Fan Type | Silent, Sleeve Bearing |
| Input Voltage | 100 - 240 VAC |
| Output | +3.3V@20A, +5V@20A, +12V@45.8A, -12V@0.3A, +5VSB@2.5A |
| Connectors | 1x 24-pin, 1x 4+4-pin CPU, 2x 6+2-pin PCIe, 6x SATA, 3x Molex, 1x Floppy |
| Protections | OVP, OCP, OPP, SCP |
| Certification | 80 PLUS Gold, UL, CE, FCC |
| MTBF | 100,000 hours |
| Dimensions | 150 x 140 x 86 mm |
| Weight | 1.8 kg |
| Color | Black |
| Warranty | 5 years |
| Maintenance & Cleaning | Use compressed air to clean vents and fan; avoid dust buildup. |
| Safety Precautions | Do not open or disassemble; risk of electric shock. Use in dry environment. |
| Spare Parts & Repairability | Cooling fan and cables not user-replaceable; contact support. |
| Compatibility | ATX12V 2.4 standard, compatible with most ATX cases. |
| Operating Temperature | 0-40°C |
Frequently Asked Questions - MasterWatt 90 COOLER MASTER
What is the wattage of the Cooler Master MasterWatt 90?
The Cooler Master MasterWatt 90 series typically offers 550W of continuous power, suitable for mid-range gaming and office PCs.
Is the MasterWatt 90 fully modular?
No, it is semi-modular. The main 24-pin and CPU cables are fixed, while PCIe, SATA, and peripheral cables are detachable for better cable management.
What efficiency certification does this PSU have?
It is 80+ Gold certified, meaning it achieves at least 87% efficiency at typical loads, reducing energy waste and heat.
Does it support the latest graphics cards?
Yes, it includes two 6+2-pin PCIe connectors, compatible with most modern GPUs. For high-end cards requiring more connectors, ensure sufficient cables.
How loud is the fan?
The 120mm fan is designed for silent operation, especially under low to medium loads. It may spin faster under heavy load but remains quiet.
What protections are included?
It includes Over Voltage Protection (OVP), Over Current Protection (OCP), Over Power Protection (OPP), and Short Circuit Protection (SCP) to safeguard your components.
What are the dimensions? Will it fit my case?
The PSU measures 150 x 140 x 86 mm (standard ATX), fitting most mid-tower and full-tower cases. Check case clearance for depth.
How do I clean the power supply?
Unplug the PSU, then use compressed air to blow dust out of the fan and vents. Do not use liquids or open the unit.
What is the warranty period?
The MasterWatt 90 comes with a 5-year warranty from Cooler Master covering defects in materials and workmanship.
Can I replace the fan myself?
No, the fan is not user-replaceable. Opening the PSU voids the warranty and poses electrical hazards. Contact Cooler Master support for repairs.
User questions about MasterWatt 90 COOLER MASTER
0 question about this device. Answer the ones you know or ask your own.
Ask a new question about this device
No questions yet. Be the first to ask one.
Download the instructions for your Power supply in PDF format for free! Find your manual MasterWatt 90 - COOLER MASTER and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. MasterWatt 90 by COOLER MASTER.
USER MANUAL MasterWatt 90 COOLER MASTER
Manual assistant
Powered by Anthropic
Waiting for your message
Product information
Brand : COOLER MASTER
Model : MasterWatt 90
Category : Power supply