I received a radically different model from the one shown in the photo is an official Lenovo. The one I received has no marks, does not have a faceplate (and therefore leaves a hole in the side of the PC when it is installed). Tested quickly it did not work (hard drive not recognized) and disables the fingerprint reconaissance (Repeatable and inexplicable ...)
Well so check that you are sent a true model Lenovo comply with the photo.