Description: For Lenovo ThinkPad E531 T540 full keyboard. 100% Brand new,high-quality replacement part,keyboard layout:US. Exquisite workmanship,easy to install,fittings ensure perfect install. Easy for you replace your faulty,cracked or broken keyboard,you should replace the keyboard in the off state. Provide the best after-sales service and reliable products. wireless charging mouse with 500MA rechargeable lithium battery,Built-in rechargeable battery,more convenient,safe and environmentally friendly. Plug and Play without driver,10m wireless receiving range,Ideal laptop and desktop companion for home and office use. Thin exterior design,good feel,accurate movement designed,comfortable to use,easy to carry. This wireless slim design optical mouse works with Windows 95/98/NT/ME/2000/XP/VISTA/Windows 7/Windows 10. Specification: Material:Plastic Size Chart: Approx.360x120x5 mm/14.2x4.7x0.2 inch Approx.11.2x5.8x2.5 cm/4.4x2.3x1.0 inch Package Includes: 1 Piece Replacement Laptop Keyboard 1 Piece Wireless Mouse 1 Piece USB Receiver 1 Piece USB Charging Cable Note: You will receive what picture shows.Anything else not mentioned are not included.Please ensure it is compatible with your model. Due to the light difference,the item's color may be slightly different from the pictures. A charging cable is included in the package.When the cursor movement delay occurs,please insert the charging cable into the front end interface of the mouse to charge.Please try not to use it while charging.