well guys my latest dumpster dive was at a copy shop in my area i found on the back of the spent cartrideges a small peice of board about 1/4" x 1/4 " with gold foil type connections and a chip on the back that when broken has gold inside, they were easily removeable from the cartridges with a small screwdriver and a quik pry , no wires or connections to mess with asi believe the chip is to let the copier know it has a cartridge in it or the volume of toner used or something to that effect. reguardless it was a quik easy find that is now targetable when dumpster diving and the nice part is that they are so quik and easy to harvest it can be done right there in the dumpster to leave the waste right where you found it only getting the good stuff.