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nForce 750i SLI Motherboard
Connector Pin Signal Pin Signal
1 GND 2
Drive Density Election
3 GND 4 NC
5 GND 6 DSI
7 GND 8 Index
9 GND 10
Motor Enable 0
11 GND 12 DSB
13 GND 14 Drive Select 0
15 GND 16 Motor Enable 1
17 GND 18 Direction
19 GND 20 Step
21 GND 22 Write Data
23 GND 24 Write Gate
25 GND 26 Track 0
27 GND 28 Write Protect
29 NC 30 Read Data
31 GND 32 Side 1 Select
33 NC 34 Diskette Change
v
Pin Assignments
Connecting Floppy Disk Drive
The motherboard supports a standard 360K, 720K, 1.2M, 1.44m, and a 2.88M oppy disk drive (FDD).
Connecting Serial ATA Cables
The Serial ATA II connector is used to connect the Serial ATA II device to the motherboard. These
connectors support the thin Serial ATA II cables for primary storage devices. The current Serial
ATA II interface allows up to 300MB/s data transfer rate.
There are four serial ATA connectors on the motherboard that support RAID 0,RAID 1, RAID 5,
RAID 0+1 and JBOD congurations.
Connector Pin Signal
1 GND
2 TX+
3 TX-
4 GND
5 RX+
6 RX-
7 GND
v
Pin Assignments
SATA A0 (bottom)
SATA A1 (top)
SATA B1
SATA B0