let's suppose you don't have any drive in Seagate Central first of all you need to check if board is ok (you can pass this step an go to Phase 4. if you already know it)
- usb-to-tty or Arduino
- Screwdriver and card
- find J2 connector on board. If sata connector look at the left, and ethernet port look at you - j2 connector is on right of the board and look like this: