HP UE257E. Number of years: 3 year(s), Service time (days x hours): 7x24, Response time: 4hHP Care Pack Services offer upgraded service levels to enhance your warranty cover for your total peace of mind and help you to stay up and running.• Within 4 hours of calling, expect an HP-qualified technician visit you onsite if HP can't resolve the issue remotely, for 3 years.