In order to regain his memory, agent K must be placed in a machine called the Deneuralyzer of which an iMac is an integral part.
Year of feature (shown above)
for suspension of disbelief, it's very likely the whole system was rewritten from the ROM up to work with this magical alien technology. Probably.
The second pic bears an odd resemblense to this picture: http://upload.wikimedia.org/wikipedia/commons/3/30/Apple_IMac%28de%29.jpg