BIOS Updates forum

It is not my pc, so i've not the hardware in my hands, but on the mobo's floppy disk there is printed 5sim! on the chaintech site i saw divers named 5sim0, 5simc and 5simn. In your opinion, are they different type of PCB? tomorrow the boy of this Pc bring me the hardware, so i can put my head into t...

This is a Chaintech moter board but i can't find the sharp model: the 5ssv? or the 5sim or the 5sda? i do not find the correct mobo... can you help me?
Gilby