Oker EB-550 550W ATX Power Supply (20+4 Pin)
ATX 12V / ATX 2.03V
20 Pin ATX Mainboard Connector
4 Pin Standard Drive Connectors for HDD / CD-ROM / CD-RW
4 Pin 3.5″ FDD or ZIP Connector
4 Pin AUX Power Connector
(it’s optional by order & may not used by all mainboards)
4 Pin + 12V Power Connector
(it’s optional by order & may not used by all mainboards)