Emprex DVD Writer 20X User Manual
Page 13

13
About This Drive
This DVD Writer is also a RPC2 DVD-ROM drive and the first regional
code will depend on the DVD title you play. You are allowed to modify the
regional code 5 times (including the initial one). After the fifth alteration,
the regional code will be locked and only those DVD titles of the same
regional code could be played afterwards, so set the code carefully.