Samsung book 4 ultra 14 July 8, 2019 16 32 64 128 Samsung book 4 ultra 14 inch Samsung galaxy book 4 ultra 14 Samsung laptop galaxy book 4 pro 14 ultra 512gb ssd Samsung galaxy book 4 ultra 14 inch Samsung galaxy book4 pro 14 ultra 7 Samsung ultra book Samsung book 1 pro Samsung galaxy book go 14 fhd laptop Samsung book pro 15 i7