Seasonic SSP-300SUG - 300W Gold Flex ATX Modular 1U power supply300W Flex ATX 1U 80Plus Gold certified High Efficiency. Low Noise Fan 2 Year Warranty Mounting bracket included SSP 300SUG is a 300W 1U Flex ATX power supply. Being Modular, SSP 300SUG is particularly well suited to applications where a custom cabling is required. This is a great benefit for reducing inventory whilst having the flexibility to have exactly the cabling and connectors required to suit the particular application. Produced by Seasonic, SSP