HP EliteOne 800 G1 Maintenance & Service Manual page 105

Feature Byte Enter the Feature Byte string. The feature byte string is case sensitive.
The label includes spaces after every four characters. You can enter or ignore
these spaces – their only purpose is to help with data entry. There is a
character limitation of 40 bytes per line. When you reach this limit, go to the
next line to continue data entry. BIOS ignores the spaces and lines.
If you make an error during data entry, the data will not validate, and the
computer asks you to correct your data input.
Build ID The Build ID of the unit.
Flexbuild
Flexbuild
System board
95