I was at Fry's Electronic store buying some "stuff" and I came across this:

Best Connectivity
SATA II to Compact Flash Adapter
Marvell 88SA8052 Chipset
On the reverse it says:
Features and Specifications
Supports SATA II (1.5Gbps and 3.0 Gpbs) host interface
Support SATA hot swap
Supports Compact Flask Type I & II and Micro-drive form factors
Well, it was inexpensive ($14), so, why not?
I plugged it in to my PowerMac G5, 2.0 Ghz machine and placed a grossly undersized 512MB CF card in the slot and....MOS recognized it. I do need to point out that my MorphOS machine has been down due to a dead battery and no hard disk drive. I added the CF card adapter and booted the live CD.
I'm going to get a new battery and larger capacity CF card and see how this plays out. I haven't found anything on the internet addressing a CF card drive in a PM G5. I've seen it used on older Macs, Amigas, etc...
If anyone has tried this please add to this thread.
Keep in mind this is an experiment. I'm doing this because this piece of hardware "just happened to catch my eye"