Note: Your BIOS may only have the Enabled and Disabled options, or it may not have these options if it only supports the Software Controlled option (or if it doesn’t support Intel SGX at all). Check with your device manufacturer to determine whether or not Intel SGX is supported on your system.
When Intel SGX is set to Enabled in the BIOS, Intel SGX has been enabled, and Intel SGX instructions and resources are available to applications.
When Intel SGX is set to Software Controlled, Intel SGX is initially disabled until it is enabled via a software application
SGX can be enabled/disabled by software too