Because of their small and flat keyboard and trackpad pointing devices, prolonged use of laptops can causerepetitive strain injury.[48] Usage of separate, externalergonomic keyboards and pointing devices is recommended to prevent injury when working for long periods of time; they can be connected to a laptop easily by USB or via a docking station. Some health standards require ergonomic keyboards at workplaces.he integrated screen often causes users to hunch over for a better view, which can cause neck or spinal injuries. A larger and higher-quality external screen can be connected to almost any laptop to alleviate that and to provide additional "screen estate" for more productive work. An intermediate solution
