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SilverStone definitely pulled out the stops with the connectors. Enough to power even the most demanding rig, but not overkill so that you have a tough time routing the cables inside your case. In the bundle are 6 x 4-pin IDE connectors, 2 x 4-pin floppy connectors, 6 x SATA connectors, 2 x 6-pin PCI-E connectors, along with the 24-pin motherboard connector and 8-pin ATX12V connector (with corresponding 4-pin conversion cable). The only omission is an RPM monitor for the fan.
The ST50EF-Plus has dual 12V rails spitting out 18A on each rail, and combined peak of 38A. The 3.3V + 5V rail each have 25A. SiverStone is marketing the Element series as their most efficient and quietest power supplies. After switching out my Enermax 535W that had a 92mm intake and 80mm exhaust, the Silverstone is light years quieter. The ST50EF-Plus also comes with the standard protections: Over current, Over voltage, Short circuit and No load operation. The power supply is rated to have an 80% efficiency rating.