Does anyone know when the Mac Pro switched from ATA to SATA DVD Drives

Does anyone know when the Mac Pro switched from ATA to SATA DVD Drives ?
I tried to find this answer online but failed.

Appears the Mac Pro (Early 2008) is the last model to suggest Ultra ATA/100 optical.
And with an optional card, use Serial Attached SCSI via Mac Pro Raid.
This kind of information gets sketchy in that the hard drive bus and other parts are SATA
and only this (and earlier) model Mac Pro has optical drive interface w/ Ultra ATA/100. The
logic board on the early 2008 appears to have two Serial ATA ports, 3.0GBPS; so to check
these, you may need to look into specification in iFixit.com repair guides, any takeapart
guides, and note specifications in everymac.com and those from mactracker.ca.
The MacPro after Early 2008 model build series (Early 2009) appears to sport an optical
drive with 18x speed, compared to Early 2008 & before, whose drives indicate 16x spec.
Other changes may be indicated by certain parts and differences; processors, graphic
support, and those kinds of things. 2008 shows dual-core, afterward, quad-core.
So on what little I found, that would appear to be the divide or when optical drive spec
on the logic board changed from Ultra ATA/100 to SATA versions. But double check.
Good luck & happy computing!

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