I need to replace a small (@ 44 millimeter or 1.75 inch) fan in my computer, but I can't find the fan on the internet. It's made by Aopen (yes, I tried their website). For some reason, it says "sleeve bearing" on the fan. (I don't know why, it's a fan, not a sleeve bearing.) Of course, it runs on 12 DC volts.

Does anyone know how I can find this fan?