Features:Suitable for ThinkPad T440 T440s T440p T440S T431s E431 E440 T440E L440 T450 L450 T450S E458 MP-12M13US-4442W 04Y0824 04Y2763 0C45328 04Y0862 0C02253 laptops. Great replacement for your faulty, worn out or broken keyboards. Technical disassembly and installation are required. US-layout, classical black color, 3kinds of types sare avaliable to choose. If some keys do not work after installation, you can try to re-connect the ribbon cable to prevent poor connection. Specifications:Main Material: ABSColour: Black Layout: US LayoutLanguage: EnglishConnection: wirelessShortcut: YesSupport for Insert and Play: YesIs there multimedia function key: NoneInterfaces: PS/2Type: with backlit and with joystick, with joystick but no backlit, without joystick and no backlit(optional)Applicable Models: for ThinkPad T440 T440s T440p T440S T431s E431 E440 T440E L440 T450 L450 T450S E458 MP-12M13US-4442W 04Y0824 04Y2763 0C45328 04Y0862 0C02253 Laptops Note:Please allow 0-1cm error due to manual measurement.Please allow slight chromatic aberration due to different display resolutions. Package includes:1x Laptop Keypad