Windows 7 / 8.1 64-bit, 36MB Windows 7 / 8.1 32-bit, 25MB Package Includes: AMD Chipset Drivers AMD AHCI Driver AMD USB 3.0 Driver AMD SB7xx RAID Drivers AMD SB8xx RAID Drivers AMD SB9xx RAID Drivers AMD A-Series APU Chipset RAID Drivers AMD E-Series APU Chipset RAID Drivers edit: dang it, beaten by mahmoud elfar