Support unlimited codes checked, users can access any of the diagnostic code to explain the function through; When you want to switch the BIOS type, first press the up-down key, then hold the down key and did not release the up button, you can achieve the type of BIOS switch; Reserved power measurement test point for advanced users to accurately measure the individual voltage multimeter; Poviding 6 LED lights (CLK, RST, IRDY, FRAM, DATA, CBE); Easy to upgrade. Users can upgrade by replacing the BIOS chip itself to the latest version of the BIOS code