Seasonic S12II 430 BRONZE. SS-430GB 430W SLI ATX12V Power Supply. When there is a need for a basic, efficient and reliable power supply for a stable office computer at a very affordable price, this unit is the first on the list. There is no doubt that the S12II-430 is all you need for a peace of mind. It has reliability built in by using high quality components assembled by Sea Sonic’s well-organized manufacturing process. Its advanced fan control system and 80 PLUS® Bronze certification are the tokens of energy savings. The power supply circuits and the system components are totally protected by Over Voltage-, Over Power- and Short Circuit Protection.