Seagate Barracuda ST340015A - Manual (Page 32)

24 Barracuda 5400.1 Product Manual, Rev. G
3.3.3 Ultra ATA/100 cable
An 80-conductor 40-pin cable is required to run Ultra DMA mode 3, mode 4
and mode 5. This cable uses even-numbered conductors connected to the
ground pins to improve signal integrity.
Figure 5. Ultra ATA cable connectors
Note. The drive supports both host and drive cable detection. The host
detects the 80-conductor cable by sampling pin 34, CBLID–, on the
interface bus. The drive detects the 80-conductor cable by sensing a
capacitor at the host side through the CBLID– signal. The result is
reported in a Fast Rise Detected bit (bit 13 of word 93 in the Identify
drive parameter block).
3.4 Drive mounting
You can mount the drive in any orientation using four screws in the side-
mounting holes or four screws in the bottom-mounting holes. See Figure 6 for
drive mounting dimensions. Follow these important mounting precautions
when mounting the drive:
• Allow a minimum clearance of 0.030 inches (0.76 mm) around the entire
perimeter of the drive for cooling.
• Use only 6-32 UNC mounting screws.
• Use only .045” +/- .005 high by .050” diameter bosses (4x) for bottom mounting
applications to prevent deformation of the SeaShield.
• Do not overtighten the mounting screws (maximum torque: 6 inch-lb).
• Do not use a drive interface cable that is more than 18 inches long.
Computer
Motherboard
Pin 1
Master
Slave
Note. If you are using a 40-pin 80-conductor
cable, attach the blue connector to the
motherboard, the black connector to the
master drive, and the grey connector
to the slave.