I own 'more than one'.

Checklist:

- Connect all 4 PCIE and provide at least 150w of power on all rails (Any PSU with 4x PCIE and over 600w should do)
- Make sure the Orange PI works. You should have received one mounted and possibly one lose in the packaging.
- Reboot (doh)
- Post a picture of your setup and I'll try to help if possible

Mine all run about 2-5% over advertised. Yours is running on a single board (1/2). Seems fairly obvious that if you checked power and cables you have: 1. A faulty board or PI OR 2. You have not connected or have a faulty data connector between the boards. The white split cable should connect from the top-port of the 'first' controller side to the top of the other. If you serialize them you run top-top, bot-bot, top-top.