I have a CRS326-24G-2S+IN unit which doesn't have internal fans. I have seen several instances online of someone adding fans to the CRS326-24G-2S+RM model with great results. Has anyone added fans to the smaller model even though it doesn't have any jumpers like the larger model? There's enough room and there are some places to access power via soldering wires but was curious if anyone had tried it.

The space available on the IN cases only allow for a 30x30 fan, which there are not as many choices as the fans for the RM version which allow for 40x40 fans. For the most part you are left with using fans for raspberry pis. These are generally cheap and can run 3.3v or 5v but are not very quiet.

The space available on the IN cases only allow for a 30x30 fan, which there are not as many choices as the fans for the RM version which allow for 40x40 fans. For the most part you are left with using fans for raspberry pis. These are generally cheap and can run 3.3v or 5v but are not very quiet.

Thanks biomesh,

Sincere there are endless options on fans I'm not overly concerned with finding a right fit more than I am unsure if anyone thinks it worthwhile to install fans with soldered connections to the PCB. I had actually thought about lining up about 3 of the 40mm fans externally and running them off of a dedicated power supply but that may be more effort than it is worth with the extra cables to manage. Thoughts?

The fan holes only fit 30x30 fans so that is your limitation. I ran then externally mounted from a USB power supply adapter for a while until I got tired of the sound. Not the most professional looking, but it works.