I see what the problem is nowMy util was intended for replacement of the HDD with an SSD, and I didn't foresee the case in which the optical drive is replaced with an SSD
The good news is: easy to solve. The only issue is how to make it easily configurable which fan needs to be corrected, or make it autodetectable. For now, as a workaround, I can give you a version that limits both the HDD fan and optical drive fan speeds.
I'd be very interested by a triple tool!!!!
I made the modification (Vertex3 120 + Hitachi 3 TB) according the excellent guide made by btobey but as several users of this very interesting thread:
https://forums.macrumors.com/threads/1148641/
already noted something went wrong
In the process, when moving up the MB (maybe the weak aspect of this guide ), I probably disconnected the ambiant sensor and when I reconnected everything all three fans went full speed!!! Transforming my wonderful i7 in a dreaded G4 windtunnel!
A triple tool would be great waiting for the day (the soonest as possible) I will reopen my Mac and this time deposit completely the mother board hoping to be able to reconnect the ambiant sensor!
Needless to say it's difficult for me to appreciate the gain in speed
But in the meantime I would really appreciate such a triple tool (if you can make it).
I already installed the SSD one and my hard disk fan is goin' at normal speed! Thanks for that!