Windows 11 Pro. Instant purchase is OK!! I am accepting price negotiations, but I am not considering a significant price reduction. The included accessories are the genuine adapter. The keyboard and pen in the photos are not included. Surface Pro 9 with a high-performance Intel Core i5 processor, 477GB of storage, and 8GB of memory. - Model: Surface Pro 9 - Processor: Intel Core i5-1245U (12th Gen) - Storage: 477 GB - Memory: 8 GB - Graphics: Intel Iris Xe Graphics Since this is a used item, please purchase only if you understand. Initialization & simple cleaning will be performed, so the battery cycle will increase slightly. *Office is not included.