But the product has imho two major flaws:
1) I would have liked that a Y-cable included, on the one hand picked by the PWM signal to the motherboard and is given the speed signal of a fan on the motherboard back on the other hand of the Power to the (at least up to 8 fans) from Molex - or SATA power connector of the power supply comes. I have so then soldered a cable itself.
2) severe is a basic design flaw: it is picked up the speed signal for all connected fans and given back to the speed monitoring of MoBo. On my Asus motherboard which meant that absolutely no more speed signal could be evaluated and an appropriate error message is issued.
I've cut on the back of the small board, the conductor track for the speed signal after connecting for the first PWM fan with a utility knife.
Now everything works as I had imagined,
With an enclosed Y-cable and without the loop-through on all PWM ports Tacho line I would give it 5 points, even if the product would thus a bit more expensive.