I have confirmed that the disc can be read, played, fast-forwarded, and rewound, and all other basic operations are working. Both video and audio output are normal. The original AC adapter (12V, center positive) is missing, so a third-party AC adapter (12V) is used as a substitute. The polarity of the connection terminals has been matched and rewired, and insulated and protected with heat shrink tubing. You can use it safely, but please understand that it is not a genuine product. Although it is in working condition, please purchase it with the understanding that it is a used item and may have minor scratches or signs of use. * Software, remote control, and instruction manual are not included. When shipping, I will carefully pack it with cushioning material.