I used one of their earlier hubs … it is, in fact very useful, especially when you need to connect a ton of fans and ARGB devices.
Taken from TPU … Cooler Master earlier this week rolled out the MasterFan ARGB + PWM Hub (model: MFX-ZHHN-1NNN6-R1), a handy accessory to simplify both fan speed and lighting management. The device, which is slim enough to be tucked away in the crawlspace behind the motherboard tray, puts out six each of 4-pin PWM and 3-pin addressable-RGB connections.
It draws power from a SATA power connector, and takes input from one each of 4-pin PWM and 3-pin ARGB connections from your motherboard. Among the six downstream PWM headers is a high-powered header marked in red, meant for multi-fan units. The hub comes in a metal body with a transparent plastic top, it measures 103 mm x 65 mm x 16 mm (WxDxH). The company didn’t reveal pricing.