No hes on about the 4-way buffered IDE Splitter that needs IDEFIX software.
It has 1X 2.5"IDE master and 2x 3.5" IDE master/slave.
These are really good and I have used one myself and Amigakits price for such an item is great!
all you need then is a slim laptop cd-rw drive and a slim cd-IDE PCB adpater that fit on to the back of the cd-rw and then cable to the 4-way Buffered IDE splitter.
I have actually done this with great success and had OS3.9 working perfect.
Regards
A^T