Lenovo ThinkPad T400 Notebook PC - Intel Core 2 Duo 2.4GHz 4GB 160GB Windows 10 Professional (Certified Refurbished) This Certified Refurbished product is tested & certified to look and work like new by a Microsoft Authorized Refurbisher. The product includes accessories, and is backed by a 1 year warranty. Intel Core 2 Duo 2.4GHz Processor 4GB RAM - 160GB SATA Hard Drive Windows 10 Professional (64-Bit) 14.1-inch WXGA TFT color LCD Display (1280 x 800)