Use the following procedure to connect the cables needed for onboard I/O:
1. If your system uses an internal floppy drive, connect the floppy cable between the floppy drives
and the 34-pin floppy controller connector on the motherboard.
2. Connect the Serial ATA and Parallel ATA cables to the drives and host adapter ports on the
motherboard (see Figure 19.26). Typically, older systems will use the primary ATA channel connector
for hard disks and the secondary channel for optical drives. Most newer systems will use
Serial ATA connections for the hard drive and Parallel ATA for the optical drives, or possibly
even SATA connections for all drives.