J17 is a Molex 47080-4002 Horizontal Mount SATA connector that provides connectivity to an external SATA drive. This is the data connector only. To provide power to a SATA drive, pick up +5V from an unused USB port through a USB to SATA POWER adapter cable. This is adequate for most SSD SATA drives. For other drive types that need other SATA voltages besides +5V, use an external supply to supply voltage to the drive. Note this SATA connector is only present (and is optional) of revision 4 or greater of the Piconium board. It is located on the under side of the board.
| Pin | Description |
| 1 | GND |
| 2 | A+ |
| 3 | A- |
| 4 | GND |
| 5 | B- |
| 6 | B+ |
| 7 | GND |