Review on 🌀 DEEPCOOL FH-10 High-Performance Integrated Fan Hub, Supports 10 Fans (3-pin Non-PWM or 4-pin PWM), Requires Only One 4-pin Motherboard Header by Chris Bertoli

I have a hub connected to SATA power and a CPU socket on my motherboard (Gigabyte 970a-ds3p). In my case there are 6-120mm 4pin PWM fans and I connected the CPU fan to port 1 of the hub. First I had a CPU fan and a case fan connected to the hub and it worked great. When idle, these two fans spin at around 500 RPM and, as expected, spin up to 1200 RPM under full load as the processor temperature rises. I moved 2 more fans to the hub and although I didn't realize it at the time, the lowest fan speed at the time was 600-650 RPM. Realizing there was a problem I moved the last 2 fans to the hub postponed. All fans now ran at a minimum speed of just under 900 rpm, regardless of the processor's temperature. At this point I realized that something was not working as expected. I unplugged one fan and the speed of the other 5 fans immediately dropped to around 125 rpm. Unplugged another fan and again all fans dropped another 125 RPM. My understanding is that all fans are simply subject to the speed of the fan connected to port 1 and the number of fans connected to the hub, should not affect fan speed. I contacted DEEPCOOL and after several rounds of emails with questions answered in the first email, they recommended I send it back via Revain for a replacement. I did and the return was quick and easy. Unfortunately, the replacement did the same. In the end I just left 4 fans connected to the hub and used the MB headers for the other two. I can live with the results but certainly not as advertised.