I’m using both on board and HBA. The psu I have listed has 14 sata connectors for power, and on corsair site you can get sata sleeves to plug in additional drives.

I emailed Corsair and asked if you can get them from their website for about 16$ each.

I’m not doing those cheap molex to sata adapters either.

I still have yet to purchase the PSU or graphics card, i’m hoping I can find something cheaper. I did forget to mention that.