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PC Hardware in a Nutshell, 3rd Edition by Barbara Fritchman Thompson, Robert Bruce Thompson

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SATA Connectors and Cables

SATA uses simplified connectors and cables. Connectors are keyed unambiguously. The 15-pin SATA Power Connector, shown in Table 13-7, and the seven-pin SATA Signal Connector, shown in Table 13-8, each use a single row of pins with 0.050 inch (1.27mm) spacing. SATA makes provision for hot-plugging using blind backplane connectors. The mating sequence for such connectors is shown in Table 13-7 and Table 13-8 in the Mating column. Connections for ground pins P4 and P12 are made first, connections for the precharge power pins and the remaining ground pins are made second, and connections for the signal pins and remaining power pins are made third.

Table 13-7. SATA Power Connector pin definitions

Pin

Signal

Usage

Mating

P1

V33

3.3 V power

Third

P2

V33

3.3 V power

Third

P3

V33

3.3 V power, precharge

Second

P4

Gnd

Ground

First

P5

Gnd

Ground

Second

P6

Gnd

Ground

Second

P7

V5

5 V power, precharge

Second

P8

V5

5 V power

Third

P9

V5

5 V power

Third

P10

Gnd

Ground

Second

P11

Reserved

P12

Gnd

Ground

First

P13

V12

12 V power, precharge

Second

P14

V12

12 V power

Third

P15

V12

12 V power

Third

Table 13-8. SATA Signal Connector pin definitions

Pin

Signal

Usage

Mating

S1

Gnd

Ground

Second

S2

A+

Differential signal pair A, positive

Third

S3

A-

Differential signal pair A, negative

Third

S4

Gnd

Ground

Second

S5

B-

Differential signal pair B, negative

Third

S6

B+

Differential ...

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