MacBook Pro (Retina, 15-inch, Late 2013)
Can you update the memory on a MacBook Pro (Retina, 15-inch, Late 2013)
MacBook Pro 15″, macOS 10.14
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No you cannot upgrade the memory on a Retina model Apple laptop after purchasing the laptop as the memory is soldered on the Logic Board.
You can, however, upgrade the storage space by installing a third party SSD from OWC as long as the laptop already has macOS 10.13+ installed.