ok... thanks to protoolsleguy for pointing out how these adapters work
i just successfully booted off my Kingston SSD connected to chinese bidirectional sata-ide bridge (connected to the right port this time) with it inserted into the 6885M controller..
i probably wont use it this way.. because of the size of the ide-sata dongle and fear of it being bent when closing the case.. but its good to know that they actually work..
but i think ive decided not to use my sata ssd's on my g4's because the speed isnt much different then that of a mechanical drive.. all of my IDE mechanical drives are ALOT faster connected to the 6885M adapter.. difference between ATA133 + ATA66 would account for that..
while the same IDE drives connected to the Tempo Sata PCI host controller via a sata-ide adapter resulted in lower speeds comparable to ATA66 (not worth connecting them that way)
i encountered an incompatibility tho.. between these sata-ide bridge adapters + my Corsair F60 SSD's
they cause a system lock up if u benchmark the drive... so theres definately some type of incompatibility on that specific SSD.. but the kingston SSDnow SSD is working fine..
the Jmicron i never got to work with any SSD for boot.. because i believe its only meant to be used with an IDE Drive.. to Sata host..
maybe its bidirectional and u toggle between with that SW1 switch? but the pdfs dont say anything about that.. and i couldnt get it to work that way.. so i dont think its bidirectional at all. they have 2 different models one for ide to sata and another for sata to ide