EPA introduced a Micro68b in 1977 with an RS-232 interface and either single or dual floppy disk drives.
Electronic Product Associates Micro68 (1976, early micro)
Original Retail Price: $430
Base Configuration: 6800 CPU, 8K RAM (64K max), 512 bytes ROM, status readout, integral hex keypad, I/O card, enclosure, power supply
Important Options: TTY/RS-232 interface, carrying case