To solve your macbook running out of space on the original SSD, with NVMe drives, you must update to 10.13 High Sierra or later before upgrading the SSD, as the computer's firmware needs to be updated first. Your SSD won't work without an update first.

Compatible with the folllwing MacBook Models:
（Note: requires macOS 10.13 High Sierra or later）
MacBook Pro:
MacBook Pro (15-inch Retina display Mid 2015)Model ID: MacBookPro11,5 (2.5GHz, 2.8GHz)
MacBook Pro (13-inch Retina display Early 2015)Model ID: MacBookPro12,1 (2.7GHz, 2.9GHz, 3.1GHz)
MacBook Pro (15-inch Retina Display 2014)Model ID: MacBookPro11,3 (2.5GHz, 2.8GHz)
MacBook Pro (15-inch Retina Display 2014)Model ID: MacBookPro11,2 (2.2GHz, 2.5GHz, 2.8GHz)
MacBook Pro (13-inch Retina Display 2014)Model ID: MacBookPro11,1 (2.6GHz, 2.8GHz, 3.0GHz)
MacBook Pro (15-inch Retina Display 2013)Model ID: MacBookPro11,3 (2.3GHz, 2.6GHz)
MacBook Pro (15-inch Retina Display 2013))Model ID: MacBookPro11,2 (2.0GHz, 2.3GHz, 2.6GHz)

MacBook Air:
MacBook Air (13-inch Mid 2017)Model ID: MacBookAir7,2 (1.8GHz i5, 2.2GHz i7)
MacBook Air (11-inch Early 2015)Model ID: MacBookAir7,1 (1.6GHz i5, 2.2GHz i7)
MacBook Air (13-inch Early 2014)Model ID: MacBookAir6,2 (1.4GHz, 1.7GHz)
MacBook Air (11-inch Early 2014)Model ID: MacBookAir6,1 (1.4GHz, 1.7GHz)
MacBook Air (13-inch Mid 2013)Model ID: MacBookAir6,2 (1.3GHz, 1.7GHz)
MacBook Air (11-inch Mid 2013)Model ID: MacBookAir6,1 (1.3GHz, 1.7GHz)

Mac Pro:
Mac Pro (December, 2013) Model ID: MacPro6,1 (2.7GHz 3.0GHz, 3.5GHz, 3.7GHz)

Package Content:
1x M.2 NVME SSD Convert Adapter