1. US version computer keyboard for HP PROBOOK 450 GO 450 G1 455 G1 470 G2 768787-001. 2. Replace your broken or unworkable part with a new one. 3. Each item has been checked and in good condition before shipping. 4. Completely fit and work. 5. Highly recommend professional installation. We will not be responsible for any damages to your device that you may cause during the changing of replacement parts. 1.Replace your broken or unworkable part with a new one. 2.Each item has been checked and in good condition before shipping. 3.Highly recommend professional installation. We will not be responsible for any damages to your device that you may cause during the changing of replacement parts.