MAXDATA 400M Guide D'utilisation page 143

Configuring Your System Model 400M & 700T User's Manual
Sec Master and 32 Bit Mode:
For Sec Master, you should choose the default value "Auto" to let the system
automatically detect the DVD-ROM drive you have in the system. For better
performance, you should choose On for 32 Bit Mode option.
Boot Sector Virus Protect:
There are two options to this field: Disabled, and Enabled. You should choose Enabled
so as to protect the system's boot sector from virus infection.
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Information in this document is subject to change without notice!!!