User manual

6.8 SATA connector and power

The part of the schematic describing the SATA module is shown below:

SATA connector

Pin # Signal name Processor pin

1 GND -POWER CIRCUIT-

2 SATA-TXP T20

3 SATA-TXM T21

4 GND -POWER CIRCUIT-

5 SATA-RXM U21

6 SATA-RXP U20

7 GND -POWER CIRCUIT-

The SATA connector allows you to connect hard

drives to the board. There is support for SATA

drives in the official images. The connector is

suitable for both regular hard-drives and SSD ones.

Note that you can power only 5V hard drives via

the board's 5V_SATA_PWR connector. If your hard

drive requires 12V of voltage you would need to

provide external power supply.

To keep the low form factor we have placed the small JST connector.

You can make an adapter cable accordingly. The other options is to check the SATA-CABLE-SET

that we have available.

For more information please visit: https://www.olimex.com/Products/Components/Cables/SATA-

CABLE-SET/

Pay note the two jumpers 5V_E_SATA and PC3/PB8 located at the bottom of the board (under the

HDMI connector). The first one 5V_E_SATA is open by default because the board has software

control of the powering for the hard disk. If you close 5V_E_SATA there would always be 5V at the

5V_SATA_PWR connector.

Which pin does the software control of the SATA powering is determined by the position of the

PC3/PB8 jumper. By default PC3 is used.

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