Manual
Page 25
... or disables the SATA function for 0Ses without EHCI hand-off support. DVMT/FIXED Memory Selects DVMT/FIXED Mode Memory size used in MS-DOS. VT and VT-d Support must also be enabled prior to TXT. USB Configuration Legacy USB Support Allows USB devices to be used by Internal Graphics Device...
... or disables the SATA function for 0Ses without EHCI hand-off support. DVMT/FIXED Memory Selects DVMT/FIXED Mode Memory size used in MS-DOS. VT and VT-d Support must also be enabled prior to TXT. USB Configuration Legacy USB Support Allows USB devices to be used by Internal Graphics Device...