The FA-6 Interface was used with the Casio FX-603P, Casio FX-840P, Casio FX-841P, Casio FX-850P, Casio FX-860P, Casio FX-860Pvc, Casio FX-870P, Casio FX-880P, Casio FX-890P, Casio VX-1, Casio VX-2, Casio VX-3, Casio VX-4, Casio Z-1 and Casio Z-1GR programmable calculator and Pocket Computers.
It features Compact Cassette connectors, Centronics printer port and RS-232C interface.