Building USB powered fan for desktop only laptop cooling?

[markyb]

Sounds abit bizarre i guess but its a genuine question..

I posted a question about a Zalman NC 1000 cooler on here as it was abit on the loud side for me. Anyway @ £30 i thought it was a tad expensive for what it gave me.. that annoying sound..

So im planning on trying to make a sorta desktop rig. Buy a cheap laptop stand and hook up a quiet fan *size not known yet, comments appreciated* to a USB port where i can either control the speed or just have it on constant with some ducting to the underside vents of the cpu.

Guessing this should cost about £20 ish.. but im obviously abit concerned about the USB power bit and if it might pop one of my ports power?

I did see a tutorial via the net but wondered if anyone on here had any success with it?

Again comments appreciated

[ces]

There are sources where you can buy such USB powered fans. In the US Performance-PCs.com has them I think. If you look around I would expect you should find something similar locally.

[AuraAllan]

I made a USB powered fan some time ago.
It's really easy.

Fan has a black and a red wire. (and maybe another one for RPM sensoring but that's not needed. Cut it off)
USB cable has a black and a red wire.

Connect black to black and red to red and you are done.

It's that easy.

NOTE: Make sure the fan can start @ 5V

Now get to work !

[markyb]

Thank you both for the replies

I have since sold the Zalman notebook cooler at a slight loss. BUT im hopeful that this can now if nothing pave a way for this DIY build just for the desktop.

Again thanks for your comments. i'll set to work on getting some bits..

Any recommendations before a searching frenzy on size of fan and which you used AuraAllan?

[AuraAllan]

I'm pretty sure I used a 120 mm 1200 rpm Scythe Slipstream.
Either that or it was a 1600 rpm version of the same fan.

[markyb]

(big thumbs up)

thanks Allan let the DIY'ing commence