A person who is carrying so much electronic equipment that if it was within their body cavity, then they would be considered a cyborg. Most often they are carrying more electronics than they'd ever need, and a significant percentage is actually redundant.
For example, a teenager with an IPOD, TI-83 calculator, wrist watch, laptop computer, and a laser pointer. Therefore, this teenager is considered an External Cyborg.
For example, if you have so many electronics on hand that being pushed into a pool of water would drown you, and not because you can't swim. This is of course assuming all of the electronics were off when you were pushed into said pool of water. Only an External Cyborg would carry that many electronics.