Winning bid + ¥5,000: Windows 11 Pro can be installed via Bootcamp. Winning bid + ¥10,000: Windows 11 Pro can also be installed using the paid virtual machine software "Parallels Desktop 20". Winning bid + ¥5,000: Mac version of Office can be installed. An Office account and password will be provided. If you make an immediate purchase without price negotiation, Office will be installed for free. Winning bid + ¥5,000: Windows version of Office can be installed. Winning bid + ¥10,000: SSD upgrade to 1TB! Winning bid + ¥20,000: SSD upgrade to 2TB! ※ Product Description ※ Manufacturer: Apple Product Name (Model Number): MacBook Air [A1466] CPU: Core i7-5650U 2.20-3.10 GHz (2 cores / 4 threads) Memory: 8GB (8192MB) Storage (SSD): Ultra-fast PCI-e 128GB Optical Drive: None Screen Size: 13.3-inch wide Resolution: 1440x900 dots Wireless LAN: Built-in wireless LAN Keyboard: Japanese layout (with backlight) OS System: Catalina 10.15.7 / Windows 11 Pro 64bit ● Accessories AC adapter, built-in battery, extension cable, instruction manuals, box ※ Some accessories may not be genuine. ■ Product Condition Extremely good condition! The LCD has no scratches and the color is beautiful. The keyboard and palm rest are also in beautiful condition, with no fading of the characters. There are slight scratches on the top and bottom covers. The battery has been charged and discharged 299 times. The initial password is 1234. ※ Important Notes We will accept returns or exchanges for defects that prevent use, such as failure to power on or boot. Other than that, we cannot accept returns for reasons related to the product condition, so please refrain from purchasing if you are concerned about the product condition.