Electronic lock arrangement

An electric lock arrangement comprising a circuit board mounted inside an optical mouse and electrically connected to the internal circuit of the optical mouse for signal transmission to the computer to which the optical mouse is connected, said circuit board comprising at least one interface connector, said at least one interface connector comprising an insertion slot electrically connected to the internal circuit of the optical mouse, and two upright spring rods perpendicularly extended from a top sidewall thereof at two sides of said insertion slot, said upright spring rods each having a horizontally inwardly extended protruding portion, and an encryption card for insertion into one of said at least one interface connector to provide a code signal to the computer for enabling the computer to copy a coded software, said encryption card comprising two retaining recesses respectively disposed in two opposite vertical sidewalls thereof and adapted to receive the horizontally inwardly extended protruding portion of each of the upright spring rods of one of said at least one interface connector, and a plug unit for insertion into the insertion slot of one of said at least one interface connector to electrically connect said encryption card to the optical mouse and the computer.