A connector having a housing and terminals, mates with a mating connector having mating terminals. One exemplary method includes associating a file consistency protocol with an operating system. Various other features and embodiments art disclosed. DNA-DNA and DNA-protein interactions are investigated using the microarrays. The opposed first and second rotor slot sidewalls are formed using a cutting tool having a first rotational axis oriented at a first angle outwardly diverging from the radial axis and with a second cutting tool having a second rotational axis oriented at a second angle outwardly diverging from the radial axis that is opposed from the first angle. The first executable code image retrieves a second version number from the second executable code image after successfully authenticating the second executable code image.