TAG 20 - Manual (Page 93)

Setup Configuration Utility (SCU) 5-9
HDD Heater
Sets if the system automatically turns on the built-in hard disk drive
heater for low temperature operation. A check mark (
√) indicates
enabled, while underline (_) indicates disabled.
Function Key 1/2/3 Define (FN1/FN2/FN3)
These three items allow user to define the corresponding function key
associated with the three function buttons (
, , ) found on the
front panel.