Micron 4GB PC3-10600 DDR3-1333MHz Non-ECC Memory Module MT16JSF51264HZ-1G4D1 HP EliteBook 84400P Laptop Memory P/N:MT16JSF51264HZ-1G4D1 HP Spare: 599092-001 4GB (2Rx8) PC3-10600S-9-10-FP