256GB SSD Solid State Pcie SAMSUNG or TOSHIBA Only. Apple Part # 661-8138, 655-1803, 655-1858, 655-1817, 655-1838C Printed Model Part # 256GB SDNEP 655-1838C, MZ-JPU256T/0A6. This is original Apple MacBook Air and Pro 256 GB SSD Solid State Pcie late 2013, 2014, 2015, 2016, 2017.
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