Xtremeram 8GB (2X4GB) Memory RAM for HP Elitebook 8440p Workstation 8440w- Laptop Memory Upgrade - Limited at Amazon.com
HP EliteBook 8440p with Intel Core i5 CPU M 450 @ 2.40GHz, 4 GB RAM, 320 GB HDD with Microsoft Windows 10 Professional and Microsoft Office 2010 Home & Business.
A-Tech 4GB Memory for HP EliteBook 8440p Laptop (1 x 4GB) DDR3 / DDR3L PC3-12800 1600MHz Non-ECC SODIMM 204-Pin 2Rx8 1.35V Dual Rank Notebook Computer RAM Upgrade Stick RAM (ATMS266383B12034X1) at Amazon.com