Microsoft will end support for Windows 10 in October 2025, so I'm installing the latest version of Windows 11 (Ver 24H2). You can upgrade to (Ver 25H2) by registering your email address. 2.00 GHz Latitude E5540 Specs (excerpt) OS: Windows 11 Pro 64bit (Ver24H2) CPU: Intel Core i5 4310U 2.00 GHz Main Memory: 4GB HDD Capacity: 128GB (SSD) --------- Replaced from HDD Screen Size: 15.6-inch Full HD Installed Software Windows 11 has been upgraded to the latest Ver24H2. Fudemame Ver.25 Basic (Software used for creating New Year's cards, etc., and managing address books: limited function version) Over 60 types of fonts (Fonts and typefaces are built-in. Documents and New Year's cards are expressed in various ways, changing the impression, and improving understanding in PowerPoint.) Google Chrome (Free software, but a standard internet browsing software used worldwide) Android Emulator (Software that allows you to use thousands of smartphone apps in a virtual space. Some apps may not work due to the performance of the main unit. Also, there are apps that require payment.) I have confirmed that the installed software starts up and works without any problems. You can use it immediately after arrival. Shall we even make a New Year's card! The product includes the main unit and charger set. The battery is a consumable item and is not covered by warranty. Basically, this is a used item, so please consider it based on the photos and product description, and bid with no claims and no returns. Please understand that we will use recycled materials for the shipping box, etc., from an environmental perspective.