Optical discs are adapted to be used with a light beam having a wavelength of 405 nm for recording or reproducing data. The mechanisms involve providing a data processing device with additional IO adapters in excess of current IO capacity requirements of an owneruser of the data processing device. The power external terminal is coupled to a battery terminal traditionally used for a thermistor. Such single molecules may be derived from natural samples, such as cells, tissues, soil, air and water without separating or enriching individual components. The processes comprise forming a suspension of silver salt particles in a carboxylic acid; forming a solution of an organohydrazine and a first organic solvent; heating the suspension; adding the solution to the suspension to form a mixture; and reacting the mixture to form carboxylic acid-stabilized silver nanoparticles.