The Dagger Pro Series is FSP's brand new 80 PLUS gold SFX PSU. It features of a fully modular design, flat ribbon cables and DC to DC module design in a compact size that is suitable for small pc host machines, such as VR systems, Micro ATX systems and home media. The Dagger Pro Series comes in two models — 550W and 650W, their power density are 2 times higher than the normal ATX PSU, to achieve a higher power performance.