Is this unit ul tested, if yes, to what standard. if not, what standards has it been tested?

UL 507 is the relevant standard for electric fans, however this fan was not tested by UL. Also important to note that UL Listed products are tested while UL Recognized products are not tested. Both levels require a direct marking on the part which means this fan has neither level. To be honest most fans at this price level are not going to be agency tested just because the target market is PC case fans, and the things UL tests for are not relevant to PC builders. The fan has CE certification which is just saying it won't burn your house down. CE doesn't check fans for performance; you're better off reading reviews than looking for agency approvals if this is a PC fan.

will this fan work with just pos & neg hooked up? do I need all for wires hooked up to work ? thanks

Will work with just pos and neg.

If I plan to use more than 50% capacity of the 5300rpm model, would I need to connect it to a controller/hub rated for more than 1amp per lane?

I would make sure that which ever Fan Port you connect this High Airflow Fan that it will support the amperage stated in the specs of the fan.

Any water or dust resistance rating? ip52, ip67?

I do not see any water/dust proof rating printed, however, I use this fan as a range-top exhaust fan in suction mode, so all cooking steam & grease-laden fumes are drawn across/through the fan... daily. Thus far, it has performed flawlessly, despite the harsh environment. I recommend this fan.

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🌬️ Cool Down, Power Up!

BUILT TO LAST - With dual-ball bearings rated for 67,000 hours, reliability is guaranteed.
AIRFLOW CHAMPION - Delivering an impressive 230 CFM, this fan ensures your systems stay cool under pressure.
QUALITY ASSURANCE - Enjoy peace of mind with a one-year warranty and 90-day satisfaction guarantee.
UNLEASH THE POWER - Experience a staggering 5300 RPM for maximum cooling efficiency.
VERSATILE INSTALLATION - Designed for both flat and upright positions, perfect for any setup.

The Wathai 12038 is a high-performance 120mm x 38mm DC brushless cooling fan, designed to deliver exceptional airflow of 230 CFM at a speed of 5300 RPM. With a robust dual-ball bearing system ensuring a lifespan of 67,000 hours, this fan is perfect for cooling demanding systems like gaming PCs, mining rigs, and server cases. It comes with a complete mounting kit and a one-year warranty, making it a reliable choice for any tech enthusiast.

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Product Dimensions	38L x 120W x 120H Millimeters
Brand	Wathai
Power Connector Type	4-Pin
Voltage	12 Volts (DC)
Wattage	22.8 Watts
Cooling Method	Air
Compatible Devices	机箱
Noise Level	58 dB
Material	Lead
Maximum Rotational Speed	5300 RPM
Air Flow Capacity	213 Cubic Feet Per Minute
UPC	702334356784
Manufacturer	Wathai
Number of Items	1
Country of Origin	USA
Model number	12038B12V4P2A
Item Weight	390 g
Item model number	12038B12V4P2A
Are batteries included?	No

Wathai 12038 120mm x 38mm 5300rpm High Airflow 12V 4pin FG PWM DC Brushless Cooling Fan

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