The CFL350A drive is designed to operate either as a Master drive (C Drive) or a Slave Drive (D
Drive). Commands from the host are written in parallel to both drives. When the C/D jumper on
the drive is closed, the drive will assume the role of a master. When C/D is open, the drive will
act as a slave. In Single-drive configurations, C/D must remain in the closed (master) position.