in the case of displays: the original display provides correct viewing angles, high contrast (clear, intense colors) and optimal energy consumption,
in the case of housings: correct fit to other elements, durability of use, aesthetic appearance,
in the case of keyboards: perfect fit to other elements of the housing, correct mounting distance, correct backlighting in the dark and durability during use,
in the case of speakers: high sound quality, no distortions, perfect fit during assembly, correct energy consumption,
in the case of accumulators (batteries): correct talk and standby time, long-term operation and safety of use,