Lenovo 14-inch ThinkPad T450s Ultrabook - HDF+ (1600x900) Core i5-5300U 8GB 128GB SSD WebCam WiFi Bluetooth USB 3.0 Windows 10 Professional 64-bit PC Laptop (Renewed) : Amazon.co.uk: Computers & Accessories
2019 Lenovo ThinkPad T450s 14 Ultrabook High Performance Business Laptop Computer, Intel Core i5-5300U Up to 2.9GHz, 8GB RAM, 512GB SSD, 802.11ac WiFi, Bluetooth Windows 10 Professional (used) - Walmart.com
An Ultrabook that works with your projector: Lenovo T450s reviewed | Ars Technica