Samsung SH-M522C-CSWN - Manual (Page 11)

a : Master Drive (Choose the MA Jumper) b : Hard Drive
c : MainBoard d : Primary 1
e : Secondly 1
If there is two Optical drive, select MA (Master) / SL (Slave).
a : Master Drive (Choose the MA Jumper) b : Slave Drive (Choose the SL Jumper)
c : Hard Drive d : MainBoard
e : Primary 1 f : Secondly 1
Installing a jumper on the master/slave select terminal
Connect a jumper to the rear side of the COMBO.
If the jumper is connected to MA (Master), it will work in the Master mode.
If the jumper is connected to SL (Slave), it will work in the Slave mode.
If the jumper is connected to CS (CSEL), you can control the device by using the host interface signal
CSEL. (In general, connection to MA is recommended.)
Setup