ADLINK IMB-M42H - Manual (Page 36)

26 UEFI Setup Utility
that the USB flash drive or hard drive must use FAT32/16/12 file
system. If you execute Instant Flash utility, the utility will show the
UEFI files and their respective information. Select the proper UEFI
file to update your UEFI, and reboot your system after UEFI
update process completes.
A.6 CPU Configuration
Active Processor Cores
Selects the number of cores enabled in each processor package.
CPU C States Support
Enables CPU C States Support for power conservation, with C3,
C6 and C7 recommended enabled for best results.
Enhanced Halt State (C1E)
Enables Enhanced Halt State (C1E) for lower power consumption.