MikroTik

I am trying to find replacement fans for router model RB1100AHx2. I
have a couple of these routers that have been in the field for a few
years that have been performing well but the fans have failed. If anyone
could give me any information on replacement parts or where to find them, it
would be much appreciated. The fan model number is D4020V12HB-K-FG.
The fan manufacturer is Symbang.

Try asking the manufactured for a local provider near you:
http://www.activa.com.tw/contact?language=en

I have already sent them a message. I thought maybe someone else may have already encountered this problem and had an answer. I have some other 40mm fans that I can put in the routers but they only have two wires.

My next step if I was on your position it's:

- Ask this ebayer: http://www.ebay.co.uk/usr/sentory-globa ... 7675.l2559

He has something similar what you're looking for, but I think it's not the exact fan you need.

http://www.ebay.ca/itm/1x-D4020V12HB-RD ... 1231249923