Elitebook 2540p - not possible to upgrade RAM (I've got 4 di... - HP Support Community - 7599630
Solved: 2540p memory upgrade - HP Support Community - 1678365
HP EliteBook 2540P Refurbished Laptop 12.1 Screen Intel Core i7 4GB Memory 128GB Solid State Drive Windows 7 Professional - Office Depot
4GB Team High Performance Memory RAM Upgrade Single Stick For HP - Compaq EliteBook 2540p (Low Voltage Processor) 2740p Laptop. The Memory Kit comes with Life Time Warranty. at Amazon.com