I am wondering if I need the auxiliary power connection to this card. Reason is after having run about a week with no problems I now seem to have 2 disks keep going offline. I am only using 12 of the 16 connections but feel that since the same 2 disks go offline that I may need the added power. All my smart reports are good. I read this about the added power. "Normal PCIe connectors on the main boards have a maximum performance of 25W. But the controllers require 26.9W. Some newer main