HP EliteBook 8540W Laptop i7-M640 2.8GHz 6GB 256GB Win7 COA
Model: EliteBook 8540W. Model HP/ELITEBOOK 8540W. Storage: 256GB SSD. RAM: 6GB DDR3. The COA (Certificate of Authenticity) sticker is located on the unit and has the Product Key needed to be able to load that OS on your unit.