Sata Interface; Hot-Plug Compatibility; Sata Device Plug Connector Pin Definitions - Seagate NAS ST4000VN000 Product Manual

4.0 SATA Interface

These drives use the industry-standard Serial ATA (SATA) interface that supports FIS data transfers. It supports
ATA programmed input/output (PIO) modes 0 to 4; multiword DMA modes 0 to 2, and Ultra DMA modes 0 to 6.
For detailed information about the SATA interface, refer to the "Serial ATA: High Speed Serialized AT Attachment"
specification.

4.1 Hot-Plug compatibility

NAS HDD drives incorporate connectors which enable you to hot plug these drives in accordance with the SATA
Revision 3.0 specification. This specification can be downloaded from www.serialata.org.

4.2 SATA device plug connector pin definitions

Table 6 summarizes the signals on the SATA interface and power connectors.
Table 6 SATA connector pin definitions
Segment Pin Function
S1 Ground
S2 A+
S3 A-
S4 Ground
S5 B-
S6 B+
Signal S7 Ground
NAS HDD Product Manual, Rev. A
Definition
2nd mate
Differential signal pair A from Phy
2nd mate
Differential signal pair B from Phy
2nd mate
Key and spacing separate signal and power segments
25