HP Elitebook 8440p - Core i5 - 2.4ghz - 4GB - 160GB - DVD - Win 7 Professional Intel Core i5-520M (3M Cache, 2.40ghz) 4GB Fast DDR3 1333mhz Memory (Supports up to 8GB) Heat resistant Magnesium Alloy chassis for durability Meets tough military standards (MIL-STD 810G) for vibration, dust, humidity, altitude, and high temperatures Certified Pre-Owned PC from a Microsoft Authorized Refurbisher. 1 Year Warranty