The MBC-550 was a small and inexpensive personal computer in "pizza-box" style, featuring an Intel 8088 microprocessor and running a version of MS-DOS. It was the lowest-cost of the early IBM PC compatibles[1] and was produced by Sanyo.
It had somewhat better video display possibilities than the average CGA card (more possible colors), but it was not completely compatible with the IBM-PC. It lacked a standard BIOS, having only a minimal 256 byte bootloader in ROM that accessed hardware directly to load a RAM-based BIOS.[2] It was sold alongside the Sanyo MBC-555 which had two 5ΒΌ" drives instead of just one.