Does the speed offset still work if I connect several Sx2-PP fans (PPA and PPB) to the same splitter or fan hub?

Yes. The speed offset of PPA and PPB fans is determined by the fans themselves, not by the PWM signal they receive. There are no precautions needed to ensure that the fans run at their correct offset speeds.

You can daisy-chain the fans, connect several to the same splitter, or power them through the same fan hub. Even when all fans share the same PWM signal, PPA and PPB variants will run at their designated offset speeds:

• NF-A12x25 G2 PWM Sx2-PP: +/- 50 RPM
• NF-A14x25 G2 PWM Sx2-PP: +/- 25 RPM