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MICRON 4GB DDR4 3200MHz PC4-25600 1.2V 1R x 16 SODIMM Laptop RAM Memory Module MTA4ATF51264HZ-3G2J1, OEM Package at Amazon.com
Amazon.com: HP Stream Laptop PC 11.6" Intel N4000 4GB DDR4 SDRAM 32GB eMMC Includes Office 365 Personal for One Year, Jet Black : Electronics