Built for productivity the hp probook 450 delivers the performance and security features essential for todays workforce the sleek and tough design provides professionals a flexible platform to stay productive in or out of the office designed for mobility work in style with the powerful 39 6 cm 156 diagonal hp probook 450 with a new gravity black lcd cover confidently take on the day with a pc built with an aluminum reinforced keyboard deck and 120 000 hours of hp testing