4x120mm 240mm USB Cooling Fan - Ultra-Quiet 152CFM 5V Powered for Router & Computer Cooling Racks, Compatible with Mining Machine/Server Cabinet/Laptop/Gaming Rig

I first bought these for my camera dvr as it got really warm to the touch. I simply put it atop the dvr and it's amazing how cool it runs now. Since I have purchased 2 more, one for my xbox and one for my tv command center and WOW, what a difference. They are very quiet and make a huge difference in operating temperature on my devices. Yep, I would recommend.

I purchased this unit to cool my Mac Mini while editing video. The build quality, though plastic, is quite sturdy. The fans seem to be spinning at the same speed and have a slight white-noise whir about them. As for performance, even under heavy rendering and using an E-GPU, everything is a lot cooler than without. Highly recommend.

When placed in the vertical position 1 fan stopped completely and the other 3 slowed down by about 50%. In addition, since the wiring is not long enough, the set of 4 is not reconfigurable with 4 in a row as depicted in the advertisement.

Just got it and seems to do what I expected, put it under my PlayStation 4 and plugged it into the usb so it will only be on when the system is on hopefully it will last longer than others I have tried.

I like it works great but is alittle noise

Love the cooling and quietness of the fans… however one of the fans are already buzzing and it’s now to noisy to use…

Just got it and set it up under an Asus Rog GT-AX11000 router. The 240 x 240mm layout fit perfectly under the router.The CPU temps on the router used to sit at 161°F. After running for 15 minutes, CPU temps have dropped down to 130°F and are still going down.I'll post an update if the fans don't last. But here's hoping they do.**UPDATE 9/2/2022**Fans are still going strong. I can float a zip lock baggie 5 inches above them. It works better than my laptop cooling pad. I'm thinking of getting another just for that.