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About This Drive
This drive is also a RPC2 DVD-ROM drive and according to DVD-
Forum, PC chip must be designed into DVD-ROM drives to record
how many times a user has changed the region code. The first
region code will depend on the DVD title you play and you are
allowed to modify the region code 5 times (including the initial one).
After the fifth alteration, the region code will be locked and only those
DVD titles of the same region code could be played afterwards, so
set the code carefully.