Introducing a rare find for vintage computing enthusiasts. This Casio MSX Expansion KB_15, manufactured in Japan, is a must-have for collectors looking to add a unique unit to their collection. The unit is designed for use with Casio MX_15 and is in great working condition. This unit is a versatile addition to any collection and is perfect for those looking to expand their vintage computing knowledge. The brand, Casio, is known for producing high-quality products and this unit is a testament to their commitment to excellence. Don't miss out on your chance to own a piece of computing history.