The Series-5 Brain Implant is perhaps the closest mankind will ever get to reproducing with cybernetics the abilities than gene engineers can draw out of the human genome. The S5 implant enables dramatic boosting of innate abilities due to it's unique conversion of bio-electrical power generated by alpha radiation and stored within the badges worn by the Galaxy Rangers.
Within Captain Zachary Foxx, the implant's function is simply to act as a power conduit, triggering the badge activates a sequence of events that supercharges his left-side bionics and enables either a boosting of the myomer muscles and tendons, or a channeling of bioe-ectrical energy through the bionic amplifiers to produce an energy blast of up to 16 standard carbine shots; capable of possibly punching through a ship's hull, or blasting a wall apart.
Ranger Gooseman's implant supercharges his genetic bio-defenses, enabling them to react almost instantly, instead of minutes of hours, as would normally happen. This brings him close to the level of the rogue Supertroopers, and makes him the only one capable of going toe-to-toe with them in personal combat.
Ranger Niko's implant acts as a psionic amplifier, boosting her innate psionic abilities by adding power from the converted radiation into a psionic boost which can increase her range from simple tactile up to lightyears distant. She can also generate a shield of ambient enetgy which will dramatically drain her implant, but can be supplanted by touching the other rangers and drawing power from them. This shield can defend against all forms of attack, but cannot be held for long.
Ranger Hartford's implant produces the oddest effects- and they still cannot properly be explained. Commander Walsh puts it best...'Doc Hartford, your implant makes you a computer wizard, able to conjure fantastic programs'. It appears that Doc is able to pring his thoughts to life with the use of the implant and his Computer Diagnostic Unit; a compact computer which has advanced diagnostics and maintenance functions, along with sensory and computer linkage capability. The CDU acts as a focus for Doc's implant power, and also as a storage facility for his 'tweakers'; the computer programs that are part of his personality and which offer capabilities far beyond any normal computer program, virus, or worm.