Shagga,
The DiamondMax plus 9 is IDE (UATA133) drive series, with either 2Mb or 8Mb of cache (depending on model).
MaxLine plus II is apparently the same drive with SATA.
You dont need support from mobo, there are cards for SATA disks. Allthough there are allready mobos with SATA connectors aswell. There are also adapters to connect IDE drives to SATA controllers.
-DaFinn