Why should a ODD support a transport-protokoll that max transferrate it can never reach?
I think about ODDs that have SATA/SAS 6Gb connectors -> nonsense.
The transition from IDE to SATA was usefull: longer and thinner cables, a better more SCSI like command-set.
Don't worry, 7260s IS a very good drive.
For ODDs not the transfer-protokoll is the most important thing, burning-quality is most important.
by the way, did you setup your sata-controller in bios to IDE, SATA or RAID?
Setup has to be done before Windows install!
If set to IDE, you forced (all hdd and odd) drives to be in IDE compatiblity mode.
If set to SATA(AHCI) or RAID and drive is still reported as UDMA, only then drive isn't capable of native SATA.
Most ODDs only support SATA I (1.5Gbit)