Hello, Thanks for the support on Baikal miner.
BK-G28 will need total 14 PCI-E plugs and it is recommended that all 14 connectors connected, but if are not able to get enough plug, make it at least 9 connectors plugged. see below:
There is no PCI-E cable included in the box, kindly note this.
"2 hash boards, with fan cable attached, plug two connectors, other 5 hash boards can plug just one connectorhttps://i.imgur.com/qpZcwkwl.png