Does the 40mm version have 2 or 3 wires?

AAB Cooling Super Silent Fan 4 has 3 wires.

what source should i use to connect 2x 200mm to the electricity?

This fan is 12v dc. If you are using it in a computer, then there may be suitable connections on your motherboard. If you are using it "standalone" then a 12v dc power supply, rated 3amp ( for two fans) should be adequate.

which direction should these be installed? I'm using them for a printer enclosure and want to pull the heat out, but there is no direction arrow

Plug the motor in, check which way the fan is blowing then mount in the desired direction.

What are the 3 wires for? Positive, Negative and........?

Normally it is speed (output) of the fan

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Fan 8

Product ID: 50811864

Details

Brand
AABCOOLING
Compatible devices
Desktop 3D
Cooling method
Air
Material
Plastic
Maximum rotational speed
4500 RPM
Noise level
17.9 Decibels

🌀4500 RPM high-speed airflow

🔇Ultra-quiet 17.9 dB(A) noise level

🌬️8.26 m³/h efficient cooling

Description

🧊 Stay cool, stay quiet — the silent powerhouse your setup deserves!

EFFORTLESS INSTALLATION - Plug-and-play 3-pin connector and included mounting accessories make upgrading your cooling system a breeze.
LONG LASTING DURABILITY - Engineered with Japanese-designed FDB technology for up to 100,000 hours of reliable, maintenance-free use.
VERSATILE COMPATIBILITY - Ideal for desktops, 3D printers, network switches, and other electronics craving efficient, silent airflow.
POWERFUL COMPACT COOLING - Delivers 8.26 m³/h airflow at 4500 RPM, perfect for maintaining optimal temperatures in tight spaces like PCs and 3D printers.
WHISPER QUIET PERFORMANCE - Experience near-silent operation with advanced Fluid Dynamic Bearings and anti-vibration pads—cooling without the noise.

The AABCOOLING Super Silent 4cm Fan is a high-performance, ultra-quiet cooling solution designed for compact electronics. Operating at 4500 RPM with an airflow of 8.26 m³/h and noise levels as low as 17.9 dB(A), it features advanced Fluid Dynamic Bearings for extended lifespan up to 100,000 hours. Easy to install with a 3-pin connector and anti-vibration pads, this fan is perfect for desktops, 3D printers, and other devices requiring efficient, whisper-quiet cooling.

Specifications

ASIN	B01HTMYOOE
Air Flow Capacity	8.26 Cubic Metres Per Hour
Best Sellers Rank	23,203 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 288 in Thermal Management Products 463 in Fans & Cooling
Brand	AABCOOLING
Compatible Devices	Desktop, 3D Printer,, Switch
Cooling Method	Air
Customer Reviews	4.1 4.1 out of 5 stars (450)
Included Components	4 Anti-vibration Pads
Item Dimensions L x W x H	40L x 40W x 10H millimetres
Item Weight	18 Grams
Manufacturer	AABCOOLING
Manufacturer Part Number	FAN029
Material	Plastic
Max Rotational Speed	4500 RPM
Model Number	FAN029
Noise Level	17.9 Decibels
Number of Items	1
Number of Packs	1
Power Connector Type	3-Pin
Unit Count	1.0 count
Voltage	12 Volts (DC)
Wattage	1 watts

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