As of 1/1/2008 the EXC-1553PCMCIA/EPII card will move over and allow the new EXC-1553PCMCIA/P1 card to take its place under the multi function 1553 single channel category for PCMCIA type cards. The EXC-1553PCMCIA/P1 card is fully compatible with the EPII card and can be upgraded to a EXC-1553PCMCIA/P2 card allowing 2 1553 multi function channels on one PCMCIA card. The EXC-1553PCMCIA/EPII card will still be available for purchase if necessary.