I have the same question. An Antec 200 case, with 6 internal 3.5 drive bays that have drives. This case also includes an external front-loaded hot swap 3.5" SATA hard drive caddy. My Gigabyte GA-MA785G-UD3H has only 6 sata connectors on the MB. The caddy is powered by an internal connector. I just want to be able to attach the caddy's sata connector to the usb header. OS is Windows Home Server. Really don't want to add any more SATA ports, as it's just the caddy. I'm not concerned about the speed as any disk in the caddy would not be used "full" time.