RAM & Memory Upgrades
Samsung 3rd 4GB DDR3 1600MHz SO-Dimm PC3L-12800S 1Rx8 1.35V 204pin
High Quality Samsung IC's Lifetime Warranty SiQuell Garantie Compatible with all devices with DDR3 DDR3L SO-Dimm PC3-12800S PC3L-12800S 16GB support Support in German, English, French, Spanish, Italian Suitable for Samsung M471B5173DB0-YK0...
https://www.bizrate.co.uk/ram_memoryupgrades/samsung-3rd-4gb-ddr3-1600mhz-oid37516728245.html