Ricoh MP5125A - Manual (Page 29)

To Install as a Slave Drive
When connecting the drive as a slave drive, change the position of the slave setting jumper
pin on the rear of the system unit.
Master drive (Booting hard disk) 1.
Slave drive (MP5125A) 2.
Secondary connector 3.
Primary connector 4.
Master drive (Other IDE drive) 5.