Lenovo ThinkPad Business Case (43R2476) - Works with the following models: Lenovo 20552BU, Lenovo 20552CU, Lenovo 20552EU, Lenovo 20552VU Lenovo 20553AU, Lenovo 205545U, Lenovo 20557LU, Lenovo 2055E1U, Lenovo 2055E2U, Lenovo 20564PU