A suction head of a vacuum cleaner with a power brush to dislodge and remove debris from an object to be cleaned is provided. According to one embodiment, a kernel mode driver of a computer system intercepts file system or operating system activity, by a running process, relating to a dependent code module. Said recesses andor through channels are arranged such that said electrical andor optical components can be simultaneously used with standard RJ-45 plug connectors to give a universal interface. At the same time, the items displayed on the touchscreen may be magnified in order to further facilitate data entry. Single-event upsets due to soft errors are detected, and a quantitative measurement of SER is determined.