Usb powered fans

hornetstinger · 7 Jan 2018 at 19:17

Do usb powered fans exist? For example using for few uses around media or audio devices, that have usb connectors.

Or simply if using multi port usb hub.

AiiR · 7 Jan 2018 at 19:43

Search usb fan on the bay, there's hundreds for a couple of quid.

Rroff · 7 Jan 2018 at 19:45

Some media devices, etc. won't have enough power on the USB ports to support a fan or only the really low current draw fans. I've got a few USB powered fans for different purposes - they can be quite handy - on my desk I have an Arctic Breeze USB powered desktop fan

they also do some models that are just a flexible but keeps it shape cable with a USB plug on one end and a fan on the other with little else.

hornetstinger · 7 Jan 2018 at 20:01

Low rpm silent ones would be ideal. Like 600rpm 12cm.

hornetstinger · 11 Jan 2018 at 13:35

I've seen USB to molex conectors. Would these be safe? I've got a few fans lying around so shame not to use them

d_brennen · 11 Jan 2018 at 13:41

hornetstinger said:
I've seen USB to molex conectors. Would these be safe? I've got a few fans lying around so shame not to use them

Wouldn't touch that with someone else's barge pole. If the fan drew too much current, at best it would cause instability of the USB bus/device and worse blow fuses/components

hornetstinger · 11 Jan 2018 at 13:47

What about using something like this

https://noctua.at/en/products/fan/nf-a6x25-5v-pwm

5v.

USB spec is 500ma I think. And watts?