An in vivo examining device and method are described. Specifically, the present invention relates to a method and system for identifying plausible sources of error in data used as input to financial risk assessment systems using Bayesian belief networks as a normative diagnostic tool to model relationships between and among inputsoutputs of the risk assessment system and other external factors. Depending on the temperature, the connection means promotes heat transfer from the heatsink to the housing, which has a large radiation area, in addition to a cooling operation using the fan.