This is a MacBook 13" white keyboard / Top case assembly. On the 13" Macbook, the keyboard is integrated into the top case, and is not available separately as in other models. This part also includes the trackpad assembly. Note that there are two versions of this top case which are available as options below. The later model Macbooks (Santa Rosa) have different symbols on some keys. Primarily the keys next to the spacebar do not have the Apple logo on them on the more recent models. The top cases however are interchangeable between the A1181 models (not for the Unibody or Polycarbonate models), and the only difference is the different style keys.