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22 Barracuda Serial ATA V Product Manual, Rev. B
3.2 Configuring the drive
Each drive on the serial ATA interface connects in a point-to-point configura-
tion with the serial ATA host adapter. There is no master/slave relationship
because each drive is considered a master in a point-to-point relationships. If
two drives are attached on one serial ATA host adapter, the host operating
system views the two devices as if they were both “masters” on two separate
ports. This means both drives behave as if they are Device 0 (master)
devices.
Serial ATA drives are designed for easy installation with no jumpers, termina-
tors, or other settings. It is not necessary to set any jumpers on this drive for
proper operation. The jumper block adjacent to the signal connector is for
factory use only.
Figure 4. Serial ATA connectors
3.3 Serial ATA cables and connectors
The serial ATA interface cable consists of four conductors in two differential
pairs, plus three ground connections. The cable size may be 30 to 26 AWG
with a maximum length of one meter (39.37 inches). See Table 6 for connec-
tor pin definitions. Either end of the SATA signal cable can be attached to the
drive or host.
For direct backplane connection, the drive connectors are inserted directly
into the host receptacle. The drive and the host receptacle incorporate fea-
tures that enable the direct connection to be hot pluggable and blind mate-
able.
Jumper Block
(factory use only)
SATA Signal
SATA Power