The product is an OEM Atari C061636 Power Supply Japan Model, specifically designed for the Atari 1027/1090 model. This power pack is a vintage computing accessory that provides 9.5V AC and 40VA of power, making it suitable for powering vintage computers and mainframes. With a reliable testing process confirming its functionality, this power supply is a crucial component for maintaining the operation of classic computing systems from the Atari brand. Made in Japan, this product ensures quality and compatibility with the specified models.