Electronic HP Care Pack AbsoluteDDS Next Business Day Hardware Support - Extended service agreement - parts and labor - 3 years - on-site - 9x5 - response time: NBD - for EliteBook 745 G4, 755 G4, 820 G4, 840 G4, 850 G4, ZBook 15 G4, 15u G4, 17 G4, Studio G4