FSP Flex Guru 300W (FSP300-57FCB) — Mini ITX Flex ATX Power Supply, 80 Plus Gold (≥90% Efficiency), Full-Range Active PFC

Compact Flex ATX power supply tailored for Mini ITX systems: the FSP Flex Guru 300W (FSP300-57FCB) delivers 300W with Certified 80 Plus Gold efficiency (≥90%). Built for reliable operation, it features Full Range input with Active PFC and is compliant with the latest UL 62368 standards. Cooling is handled by an intelligent fan-speed controller paired with a ball-bearing fan, and the unit sports a black coat finish. Internal components include 100% Japanese-made electrolytic capacitors and a powerful single +12V rail design for stable output. Accessories and cabling: a power cord is included, plus three cable sets containing 20+4 pin, 4+4 pin, Molex and SATA connectors, along with a certified black ribbon cable.