AOpen DUW160812X0502A User Manual page 17

Hardware Installaiton
There is another very important thing to take care of before the installation of the
drive is setting the master/slave jumpers. Please examine the panel
16x DVD Dual
at the rear of the machine in order to set the master/slave jumpers.
SLAVE
USE CSEL
-- E-14 --
MASTER
Please do not use USE
CSEL setting
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