Power supply ASRock CL-550B Challenger 550W ATX, 20+4 pin, 80 PLUS Bronze, 120 mm fan, black

The ASRock Challenger power supply series includes 80 PLUS Gold models (850W, 750W, 650W) and 80 PLUS Bronze models (750W, 650W, 550W). The Challenger 550W 80 PLUS Bronze unit provides stable power delivery for mainstream desktop systems and comes in a black finish with an active 120 mm cooling fan. It uses a standard 20+4 pin ATX motherboard connector and integrates a 5V BOOST function for auxiliary power needs.

Advantages

This 550W ASRock Challenger power supply is 80 PLUS Bronze certified, offering improved energy efficiency compared with non-certified units. It features a 120 mm golf-blade fan for effective cooling and reduced noise, plus built-in safety protections to protect system components under varying load conditions. The product is backed by ASRock's 5-year warranty for long-term reliability.

Key specifications

• Certification: 80 PLUS Bronze
• Wattage: 550 W
• Cooling: 120 mm golf-blade fan
• Motherboard connector: 20+4 pin ATX
• Form factor: PC ATX
• Color: Black
• Additional feature: Built-in 5V BOOST function

How to use

Install the power supply into a compatible ATX PC case, secure it with mounting screws, and connect the 20+4 pin ATX connector to the motherboard. Attach required peripheral and GPU power connectors according to your system configuration. Ensure proper airflow around the 120 mm fan and connect the unit to a grounded mains outlet. Verify system stability at different loads and follow standard safety precautions when working inside a computer.

Recommendations

Use this 550W ASRock Challenger model for mainstream desktop builds without high-end multi-GPU setups. For systems with high power demands, choose a higher wattage Challenger Gold model. Keep the PSU dust-free and ensure adequate case ventilation to maintain cooling efficiency and longevity.