MSI X99A XPOWER AC - MS-7881 BIOS Ver.A10 16MB - Updated BIOS code. - Improved USB3.1 compatibility. - Improved USB keyboard compatibility. - Improved system stability when MSI Fast Boot is enabled. - Improved memory compatibility. - Fixed SMART Fan function can not proper work when MSI Fast Boot is enabled.
MSI X99S XPOWER AC - MS-7881 Ver.170 - Updated BIOS code. - Improved USB3.1 compatibility. - Improved USB keyboard compatibility. - Improved system stability when MSI Fast Boot is enabled. - Improved memory compatibility. - Fixed SMART Fan function can not proper work when MSI Fast Boot is enabled.