Antec’s new generation Cuprum Strike Bronze power supply is crafted for quality, efficiency, and performance. Featuring 80 PLUS® BRONZE certification, a quiet 120 mm fan, CSK Bronze includes Antec’s 3 year warranty. The CircuitShield™ suite of industrial-grade protections ensure that the power delivered to your system is safe and reliable in any environment. 80 PLUS® Bronze certified Delivering up to 88% efficiency, the CSK Bronze Series utilize active PFC, giving you a cooler, quieter system, all powered by Continuous Power. 120 mm Silent Fan The 120 mm silent fan is ideal for quite computing and is designed for longer lifetime, guaranteeing hours of operation. Flat Cables 3-Year Warranty We stand by the quality and safety of the CSK Bronze Power Supplies, offering a 3-year parts and labor warranty and unlimited access to our incomparable technical support and customer service. Product Name CSK550 Model Name X5000A253HC-20 Type ATX 12V 2.31 Dimension 140(L) x 150(W) x 86(H) Warranty 3 years Input Voltage 100 ~ 240 VAC Input Current 10A ~ 5A Input Frequency Range 50Hz ~ 60Hz PFC Active PFC Power Good Signal 100 ~ 500ms Efficiency 88% Typically Protection OVP/UVP/SCP/OPP/NLO/OTP Output Capacity 550W