TYAN GC68A-B8056 Service Engineer's Manual page 140

5.3.9 Trusted Computing
Security Device Support
Enables or disables BIOS support for security device. O.S. will not show Security
device. O.S. will not show Security Device. TCG EFI protocol and INT1A interface
will not be available.
Enabled / Disabled
Disable Block sid
Override to allow SID authentication in TCG Storage device.
Enabled / Disabled
140
http://www.tyan.com