Lenovo ThinkServer RD240 Software User's Manual page 279

Figure 8.21 Change Security Settings - Security Key ID Screen
5. Keep the exisiting security key identifier or enter a new security key
identifier.
Note: If you change the security key, it is highly recommended
that you change the security key identifier. Otherwise, you
will not be able to differentiate between the security keys.
6. Click Next.
The Change Security Settings - Security Key screen appears as
shown in Figure
Selecting Full Disk Encryption Security Options
8.22.
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