Can one get mains powered PWM fan controllers?

[Anjow]

This isn't actually for a PC, rather it's for the quarter rack I keep my network gear and NAS in. I've currently got some pre-made kit of 2x 120mm fans connected to a mains plug and they work okay, but I'd like to be able to replace them with a 200mm fan whose speed I can control. Since this isn't in a PC case I don't have the usual 4 pin PWM connectors available, but is there anything out there that can present that from a mains power supply? Or is there a better way to do this? All the searching I've done turns up stuff that isn't mains powered.

 

[doyll]

I don't know of any and I've looked before. I just used a small mains powered 12v power supply similar to laptop/notebook power supply. Easily found on web from a couple amp to 7.5 amp for for up to a little over a tenner.

 

[VaderDSL]

If you have the £ you can do this easily from Noctua : For both parts, probably be looking around £50 ish

https://noctua.at/pub/media/blfa_files/manual/noctua_nv_ps1_manual_en_web.pdf

Have a look further down the support document at the examples.

 

[Hawk Tuah]

Probably easiest, and cheapest to go from a standard USB adapter, then add something like this.

12V Step-Up USB to Dual PC Fans Power Adapter Cable, Black Sleeved - Full Fan Speed Adapter for 3-Pin/4-Pin Cooling Fans 0.5M - AliExpress 7

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

Or if you want to spend a little more for the whole jobbie...

120mm 3V-12V USB Powered PC Router Fans With Speed Controller High Airflow Cooling Fan For Router Modem Receiver - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

 

[Anjow]

Excellent, looks like there are a few viable options then - thank you.