Nvidia nForce 650i User Manual page 29

(8) Floppy drive Connector (34-pin block): FLOPPY
This connector supports the provided floppy drive ribbon cable. After connecting the
single plug end to motherboard, connect the two plugs at other end to the floppy drives.
(9) Primary IDE Connector (40-pin block): IDE1
This connector supports the provided IDE hard disk ribbon cable. After connecting the
single plug end to motherboard, connect the two plugs at other end to your hard disk(s).
If you install two hard disks, you must configure the second drive to Slave mode by
setting its jumpers accordingly. Please refer to the documentation of your hard disk for
the jumper settings.
(10) Secondary IDE Connector (40-pin block): IDE2
This connector connects to the next set of Master and Slave hard disks. Follow the
same procedure described for the primary IDE connector. You may also configure two
hard disks to be both Masters using one ribbon cable on the primary IDE connector and
another ribbon cable on the secondary IDE connector.
PS/2
Mouse
PS/2
Keyboard
Optional
IEEE1394
FLOPPY
Pin 1
Floppy Drive Connector
IDE1
Pin 1
Primary IDE Connector
25
Giga LAN
ESATA
USB1
USB1 UL1
Line-IN
Surrback
Line-OUT
CEN/LFE
Surround
MIC-IN