Can it be connected to 3 pin fans?

Yes, and these can also be daisy chained together and connect 3 or 4 fans on one motherboard fan header (although since they’re pwm you’d wanna use a 4 pin header anyways)

Do these fans come with screws or rubber pins to mount the fans, or are those bought separately?

It came with screws ,, fan is quiet and has been running 24 /7 .

What is the difference between the 5-pack p12 pwm ($20.99) and the 5-pack p12 pwm pst ($40)?

The $20.99 you see is not PWM. It is just a P12, meaning it is a 3 pin 1800rpm fixed speed. Fan speed will not be adjustable unlike the 5 pack P12 PWM PST $40. Hope this answer helps.

The pst connections has only 3 pins. Will the speed be the same has the main fan that has 4 pins connected on to the 4 pin motherboard ? Bios in pwm

If the PST connector is connected to another of the same 4-wire fan type (PST or not) it will run at the same speed. If a different model of 4 wire fan is connected, its speed will still be perportinally controlled, but the actual airflow will be different (because ... different fan type). If you connect a 3-wire fan to a PST connector (which you can physically do), it will run at full power. Essentially all the PST connector does is replicate power and ground along with the PWM control signal to another connector. The missing pin (#3) is the RPM sense back to the motherboard, because you can't meaningfully wire RPM sense wires together the PST connector omits it so that the RPM of the first fan is reported properly.

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ARCTIC P12 PWM PST - PC Fan, 120mm Fan, PC Case Fan, Pressure-optimised

ARCTIC P12 PWM PST - PC Fan, 120mm Fan, PC Case Fan, Pressure-optimised

Product ID: 352557675

Details

Brand
ARCTIC
Cooling Method
Fan
Power Connector Type
4-Pin
Product Dimensions
12L x 12W x
Voltage
12 Volts

💨56.3 CFM airflow

🧊4x longer motor lifespan

🎛️200-1800 RPM PWM control

Description

❄️ Stay cool, stay ahead — the silent powerhouse your rig deserves!

BUILT TO LAST - Advanced motor design runs 10°C cooler, quadrupling fan lifespan for long-term reliability.
NEXT GEN EFFICIENCY - Neodymium magnet motor technology ensures powerful airflow with minimal energy consumption.
SMART PWM SHARING TECH - Dynamic 4-pin PWM control adapts fan speed seamlessly, balancing silence and peak performance.
PRECISION COOLING POWER - Optimized static pressure delivers focused airflow for superior heat dissipation in compact builds.
WHISPER QUIET PERFORMANCE - Ultra-low noise level at just 0.3 Sone keeps your workspace serene without sacrificing cooling.

The ARCTIC P12 PWM PST is a 120mm case fan engineered for high static pressure and whisper-quiet operation. Featuring PWM Sharing Technology for precise speed control between 200 and 1800 RPM, it delivers 56.3 CFM airflow with minimal noise (0.3 Sone). Powered by a next-gen Neodymium magnet motor, it runs cooler and lasts four times longer than typical fans, making it an ideal choice for professional-grade PC cooling in sleek, compact setups.

Specifications

ASIN	B081VPP24C
Air Flow Capacity	56.3 Cubic Feet Per Minute
Best Sellers Rank	#12,704 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #46 in Case Fans
Brand Name	ARCTIC
Compatible Devices	Desktop, Laptop, Server
Cooling Method	Fan
Customer Reviews	4.7 4.7 out of 5 stars (424)
Global Trade Identification Number	00840033400152
Item Dimensions L x W x H	12L x 12W x 2.5H Centimeters
Item Weight	145 Grams
Manufacturer	ARCTIC
Material Type	Polycarbonate
Max Rotational Speed	1800 RPM
Model Number	ACFAN00170A
Noise Level	0.3 Sones
Number of Items	1
Number of Packs	1
Part Number	ACFAN00170A
Power Connector Type	4-Pin
UPC	840033400152
Unit Count	1.0 Count
Voltage	12 Volts

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