Cooler Master PWM Fan HUB Product Features Occupying only One 4-pin Motherboard Header (System Fan or CPU Fan) 10 Sets of PWM FAN interface, to make your PC work with more fans Powered by SATA DC 12, efficient and stable running with 10 fans 5 Fans ports on each side which accommodates better cable managements Attach to the case with the magnet in the back side, you can put it or relocate it anywhere you want. Compact design, small size which saves up more room for a tidy look and better air flow in the chasis Mike It Yours!