Gigabyte branded SATA card are using the Marvell chipset, drivers for compatible Marvell devices are below.
Marvell 91xx/92xx SATA 6G RAID Controller
File: Marvell_1.2.0.1039-WHQL.zip
f76b79bfeab10085df29b623f552da35a3d4a3f7cab872d3a2bd2795bf8b8c19
Gigabyte branded SATA card are using the Marvell chipset, drivers for compatible Marvell devices are below.
File: Marvell_1.2.0.1039-WHQL.zip
f76b79bfeab10085df29b623f552da35a3d4a3f7cab872d3a2bd2795bf8b8c19