Amazon is offering the PNY StorEDGE MacBook flash memory expansion in 64GB/128GB flavors for $39.99 and $94.29 with free shipping. The 64GB deal matches its all-time low, but the 128GB is a new low by $3.

These cards are designed to live inside a MacBook Air/Pro or Retina and provide a handy additional 128GB or 64GB of space. The shortened size means they sit nearly flush with the sides of the MacBook and won’t protrude out. Rated 3.5 stars. (via Giz) PNY-storedge-deal-amazon

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