It's SATA 2 according to the product page, they list it as SATA 3Gbps which is the official speed of SATA 2, SATA 3 is 6Gbps. You can find the product page for the Motherboard here > https://www.gigabyte.com/Motherboard/GA-M720-US3-rev-10#ov. Hope this helps!
It's SATA 2 according to the product page, they list it as SATA 3Gbps which is the official speed of SATA 2, SATA 3 is 6Gbps. You can find the product page for the Motherboard here > https://www.gigabyte.com/Motherboard/GA-M720-US3-rev-10#ov. Hope this helps!
For a mechanical drive it doesn't matter if sata 2 or sata 3 is being used. Sata 2 and sata 3 are backwards compatible.
It starts to matter only if SSD drive is being used, since sata2 interface will limit speed of SSD.