Unfortunately, laptop optical drives tend to be OEM parts only. It can
Beg to differ...
There is a rampant aftermarket of combo drives being sold which are *not*
Beg to differ, since I am charged with buying these components for
low-volume production purposes. All the consumer-channel vendors
you'll find selling bare drives are selling refurbs (i.e. pulls from
dead laptops), spare parts from laptop vendors, surplus stock from
various channels and other secondary-channel merchandise.
Some distributors of OEM electronic components do sell these drives
"new", but they don't normally keep them in stock and they aren't
likely to order just one in for you unless you already have a
relationship.
The software interface is little more. There must be a driver available for a
same-make optical drive, which it turns out, uses the same command set.
ATAPI has a baseline standardized command set (SCSI command set over
IDE bus) which makes it possible for generic software to work with all
compliant drives. Some software vendors - e.g. Apple - choose to
ignore drives they haven't explicitly tested.