Mini Kaze Ultra, 40mm x 20mm Quiet Cooling Fan Discontinued
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Scythe Mini Kaze Ultra, 40mm x 20mm Quiet Cooling Fan

Mini Kaze Ultra 40 mm fan is the power-version of the Mini Kaze 40 mm Series. A speed of 3500 rpm at an air flow of 4.9 CFM makes this fan suitable for many applications.

Features

40 x 20mm quiet PC cooling fan
Noise level 19.6 dB(A)
2-pin and 3-pin connectors
Great value
Perfect for Chipset/VGA Cooling

The Mini Kaze Ultra 40 mm fan is the power-version of the Mini Kaze 40mm Series. With double thickness and accordingly bigger fan blades, the Mini Kaze Ultra boasts with higher static pressure and increased airflow while being the same height and width. With 3500 rpm and an airflow rate of 4.9CFM, a moderate noise level of 19.56 dB(A) is achieved. The Mini Kaze Ultra is suitable for various fields of application.

2-Way Usage

Including 2-pin to 3-pin adaptor, this fan can be versatile for using as a chipset fan, replacement for external HDD case fan, or a replacement fan for removable case.

Specifications	Mini Kaze Ultra
Fan size (edge to edge)	40 mm
Screw hole spacings	32 mm
Model	SY124020L
Air volume at full speed (12V), CFM ±10%	4.86
Noise level at full speed (12V), dB(A)	19.56
Fan speed at full speed (12V), RPM ±10%	3500
Weight, g	80
Approximate cable length	11cm 2-pin, 22cm 3-pin
Life expectancy @ 25°C continuous use	2 years
Power connector	3-pin and 2-pin
Bearing type	Sleeve
Accessories	2-pin to 3-pin converter
Fan depth	20 mm
Rated voltage	12 VDC
Rated current	0.07 A
Warranty	24 months
EAN barcode	4571225040943

Specifications	Mini Kaze Ultra
Fan size (edge to edge)	40 mm
Screw hole spacings	32 mm
Model	SY124020L
Air volume at full speed (12V), CFM ±10%	4.86
Noise level at full speed (12V), dB(A)	19.56
Fan speed at full speed (12V), RPM ±10%	3500
Weight, g	80
Approximate cable length	11cm 2-pin, 22cm 3-pin
Life expectancy @ 25°C continuous use	2 years
Power connector	3-pin and 2-pin
Bearing type	Sleeve
Accessories	2-pin to 3-pin converter
Fan depth	20 mm
Rated voltage	12 VDC
Rated current	0.07 A
Warranty	24 months
EAN barcode	4571225040943

Customer Reviews

Very quiet for its size

Stephen Thomas, 3rd April 2017

I used this to replace a 40mm ‘screamer’ in a PSU. This one is indeed very quiet and pushes enough of an airflow to keep the unit cooled too. I’ve dropped 2 stars because of the cable on this fan. It is simply too short to do anything with, and I had to get the cable modified to make it longer, which means my warranty is not valid and it ended up costing more than it should. As supplied in the box, the cable is barely 4 inches long. The product page on QuietPC.com doesn’t mention this either.

Overall very quiet as described but investigate your cabling options carefully when considering this fan.

Delivery from QuietPC.com flawless as usual.

Good to quiet Microserver N40L

Anonymous, 27th October 2014

A great replacement fan for the noisy 40mm PSU fan in Microserver N36/40/54L.

Only issue is the cable on the Scythe is about an inch too short - needed to splice and solder a slightly longer cable to make it fit.

Talk About Quiet.

Christine Barber, 30th November 2010

I purchased a Pro Powered Mixer but sadly the cooling fan was to say the least loud, though for stage use would have been fine, but in my lounge not good, then I found this site Quietpc.com and took a chance in opening up a brand new piece of equipment to see what the fan was, then I ordered two fans from here and had great service and very fast delivery, removed the old and in with the new, and what a change, now you can’t hear any fan noise, a fantastic product and I thank Quiet Pc, and will recommend them to anyone, if you want a quiet life this is the place.

Scythe Mini Kaze Ultra quietly rocks

John Kager, 13th July 2010

I bought this fan as a replacement for a very noisy (you could hear it from the next room) Cisco Catalyst 1924 fan. This fan is so silent to you even forget that the Cisco switch still exists. I highly recommend Scythe Mini Kaze Ultra

Silence in a box...

David Kennedy, 20th April 2010

Brilliant little fan, used it to replace the rather noisy fan in my SKY+ box (Pace 3100). Works great, almost inaudible. One note though, if you’re thinking of the same thing (fitting it in a PVR) you may want to look for some different screws as the ones supplied pass through the mounting holes rather than gripping…

Top score for delivery too! :)

Product Resources

Scythe website

FAQ

How do I measure fan size?
The size of fan you need will generally be determined by the size of the fan fitting position in your PC case. The sizes of all the fans on our website are shown as measured along any one of the fan’s four sides, NOT the distance between the fan’s screw holes! Our most popular fan size is 120mm, followed by 80mm. This isn’t really dictated by customer preference, but more by recent designs of PC cases.

As for the thickness (depth) of the fan, generally 25mm (1 inch) is by far the most common depth, although smaller fans can have shallower depths such as 15mm or even 10mm. All our fans are 25mm thick unless otherwise stated. If you have any questions about which fan you should order, please don’t hesitate to get in touch.

If you know the distance between the fan mounting screw holes but don’t know what fan size to order, please see the following table. Note that the mounting hole measurements shown below are taken horizontally or vertically between the holes and not diagonally.

Screw hole spacings and fan sizes

Space Between Screw Holes Fan Size

32mm 40mm

40mm 50mm

50mm 60mm

60mm 70mm

72mm 80mm

83mm 92mm

105mm 120mm
I received a small cable (resistor) with my fan; what is it for?
The resistor cable (also called Ultra Low Noise or ULN cable) is designed to allow the fan to run slightly slower for even quieter operation. The benefit in lower running noise is significant. Although the airflow will be reduced slightly, this usually has minimal effect on PC temperature. We would generally recommend using the ULN resistor cable for best results in almost all circumstances.
How can I tell which way the air blows through the fan?
Hold the fan so that the round fan sticker is facing you. You are looking at the rear of the fan. When you plug the fan in, the air will be blowing towards you. If you want a fan to act as an air intake, then the fan sticker will be facing the inside of the case. Some fans also have two small arrows moulded into their plastic housing - one arrow shows the direction of airflow, and the other (at 90°) shows the direction of blade rotation.
Is it possible to use a 4-pin PWM fan or CPU cooler with a motherboard which has only 3-pin fan headers on it?
Electrically, there is no problem doing this - the fourth pin on the fan cable is used purely for PWM control and is not needed in order for the fan to run. So you can plug the 4-pin fan connector onto the 3-pin motherboard fan header, leaving the fourth pin not connected to anything. The fan will potentially run at full speed, so if you would like to reduce the speed of the fan you will need to adjust the fan speed setting in your BIOS or use fan control software such as SpeedFan in Windows.

The only other problem to consider is that occasionally, components immediately adjacent to the motherboard fan header can get in the way of the larger 4-pin fan connector, physically preventing connection. This problem also occurs if you try to use an in-line fan speed controller such as the one made by Gelid.

Another avenue to explore is the possibility of using a bay-mounted fan controller. Several models are available now which provide 4-pin fan headers, so this is an easy way to use 4-pin PWM fans in a PC system which has only 3-pin fan headers on its motherboards. When using this method, you may find it necessary to disable any fan warning settings in your motherboard BIOS, since the motherboard may incorrectly believe that its CPU fan has failed when the fan is connected to a fan controller rather than directly to the motherboard itself.