Hello again, This is the ECS N2U400-A case (as in bios PCCHIPSN2U400-A) N2U400-A Ver 1.0b 10/06/2003. FOR SALE VAL is raw register value label in0 "VCore 1" *0x10 ? (default case) label in1 "VCore 2" *0x10 ? (default case) label in2 "+3.3V" *0x10 ? (default case) label in3 "+5V" => (0xA80*VAL)/0x64 label in4 "+12V" => VAL*0x40 label in5 "-12V" => 0x4249 - ((VAL*0x2024)/0x64) label in6 "-5V" => 0x2249 - ((VAL*0x13A4)/0x64) label in7 "Stdby" => (0xA80*VAL)/0x64 label in8 "VBat" => VAL*0x10 (Result/10)+1000 before decimal dot result/1000 after (i'm in hurry so not sure) If temp has seventh bit set then (XOR TEMP,0xFF)+1 is made and it prints (-) before temp value and degC. Please provide output of isadump 0x295 0x296 to the list. I hope Jean Delvare will help you with the real formulas. I'm leaving to Belgium and I dont know if I will be online. Lines in0 - in8 are monitored in the bios(confiremed in code) CPU Core Voltage : Voltage 1 : Voltage 2 : Voltage 3 : Voltage 4 : Voltage 5 : Voltage 6 : Voltage 7 : Voltage Battery : Temperature 1 : CPU Temperature : CPUFAN1 Speed : CASFAN1 Speed : PWRFAN1 Speed : Dot forget to CC to the list. I hope this helps regards Rudolf