230MB high-reliability MO disk, Windows compatible. - Brand: MITSUBISHI - Model: MO-230MB - Capacity: 230MB - Compatible OS: Windows 3.1 and later - Features: High reliability and durability - Country of Manufacture: Japan Thank you for viewing. It's been years, but it's unused. If you're interested, please consider it. I will wrap it in bubble wrap for shipping. I don't plan to include the box, so please let me know in the comments if you need it.