Noctua Nf-A4X10 24V PWM, 40Mm Quiet Fan for 3D Printers and Other Applications,
Noctua Nf-A4X10 24V PWM, 40Mm Quiet Fan for 3D Printers and Other Applications, 4-Pin, 24V Version (40X10Mm, Brown). The NF-A4x10 24V PWM is a PWM-enabled 24V variant of Noctua’s award-winning, premium-quality NF-A4x10 40mm fan.