Tested and working. Does not come with power adaptor. Bad Battery No Operating System.The Dell Latitude E5400 is a 14-inch notebook/laptop featuring an Intel Core 2 Duo processor with a speed of 2.40 GHz. It comes with 2GB of RAM and a 160GB HDD, making it suitable for casual computing tasks. This model is part of the Latitude series by Dell and includes integrated/on-board graphics, with a maximum resolution of 1280 x 800. It does not come with an operating system included, but does have Wi-Fi capabilities. Perfect for those in need of a reliable and efficient laptop for everyday use.