This is an ultra-compact PC that was a hot topic when it was released in 2021, touted as the "world's smallest." The CPU is the higher-end J4125 (4 cores, 4 threads). Originally, it had a 120GB eMMC storage on the board, and most of the used items sold on Mercari and Yahoo Auctions use this eMMC as the system disk. However, since eMMC is slow, a new 128GB M.2 SSD was additionally installed, creating a dual-storage configuration. The SSD was purchased new last week. The remaining 120GB eMMC storage is a blank disk, so please use it for data storage and backups. The OS is a clean install of the latest version of Windows 11 HOME 25H2, and Office Pro 2021 has been added. Both are activated with genuine licenses. The SSD has about 80GB of free space after storage cleanup. ◆ Product Review https://daily-gadget.net/notepc/22997/ ■ Specifications CPU: Celeron J4125 OS: Windows 11 HOME Genuine License Memory: 6GB DDR4 Storage: SSD 128GB (New) + eMMC: 120GB Office: MS Office Pro 2021 Genuine License ■ Included Items ・Main unit ・Genuine AC adapter ・VESA mount Before listing, I performed detailed maintenance and operation checks, so it's perfect for those looking for a "decent used item" rather than a junk item. The following maintenance was performed to ensure long-term usability: ・Case cleaning ・10-day stress test, including CPU/memory/storage temperature measurements