I have installed a second ATA HD (Maxtor 80GB/2Mo cache/ATA 133 (6Y080L0)) as described by Jefftrep
here
I have connected this HD with an ATA133 certified ribbon cable to my Superdrive A107D, that way; it is recognized by the system as AT-6.
(Do not forget to define slave and master!)
When compared to my original Seagate (ST380013AS), it is faster, and much more silent.
This proves one more time that this tip is useful and performance-wise interesting.
