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A-Tech 4GB Stick for Asus K Notebook Series K43BY K43E K43SA K43SJ K43SV K43TA K43U K45A K45DR K45VD K45VJ K45VM K45VS K46CA K46CB K46CM K52JV K53BY SO-DIMM DDR3 Non-ECC PC3-12800 1600MHz RAM
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Asus K55a MEMORY UPGRADE to 16GB or to add a SSD drive - Other models like K53 are similar - YouTube
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