Memory configuration for the M500: Memory Size SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 1MB ON OFF ON ON ON OFF OFF OFF 2MB OFF ON ON ON ON OFF OFF OFF 4MB ON ON OFF OFF ON OFF OFF OFF 5MB OFF OFF OFF ON ON OFF OFF OFF 8MB OFF ON OFF OFF ON OFF OFF OFF 12/16MB* OFF OFF OFF OFF ON OFF OFF OFF *When used in conjunction with the Micronics 4M-08 piggyback memory card