I tried a SATA III card but it runs on PCIe and that is not supported on a Mac 1,1 - I tried it and had to return it 😞
They might have still some stock of an older Raid card that will suit your MAC 1,1, just check with them 😊
MacBook Pro M3 MAX 128 GB 8TB - 2 x 48" screen --- Logic Pro --- Mir Pro 3D --- Most of the VI libs, a few Synch... libs --- Quite a few Kontakt libs --- CS80 fanatic