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 NameCSK550
Model NameX5000A253HC-20
TypeATX 12V 2.31
Dimension 140(L) x 150(W) x 86(H)
Warranty3 years
Input Voltage100 ~ 240 VAC
Input Current10A ~ 5A
Input Frequency Range50Hz ~ 60Hz
PFCActive PFC 
Power Good Signal100 ~ 500ms
Efficiency88% Typically
ProtectionOVP/UVP/SCP/OPP/NLO/OTP
Output Capacity550W
Connector
1 x MB 24(20+4) Pin
1 x 8(4+4) Pin EPS 12V
2 x 8(6+2) Pin PCI-E
7 x SATA 
2 x Molex
1 x FDD