Seagate ST980817SM データシート

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EE25.2 Series Product Manual, Rev. E

See Section 3.4.1 beginning on page 30 for SATA drives.

See Section 3.4.2 beginning on page 31 for PATA drives.

Each drive on the SATA interface connects in a point-to-point configuration with the SATA 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 SATA 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.

SATA drives are designed for easy installation with no jumpers, terminators, or other settings. It is not neces-
sary to set any jumpers on this drive for proper operation. The jumper block adjacent to the signal connector is 
for factory use only.   

The SATA 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 5 for con-
nector 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 features that enable the direct connection to be hot pluggable and blind 
mateable.

For installations which require cables, you can connect the drive as illustrated in Figure 5. 

Each cable is keyed to ensure correct orientation.

Jumper block

(factory use only)

SATA interface connector

SATA power connector

Power cable

SATA interface cable

SATA interface connector

Power connector