MacBook Pro (Retina, 13-inch, Early 2015) Upgrade to NVMe M.2 SSD - YouTube
Timetec 512GB MAC SSD NVMe PCIe Gen3x4 3D NAND TLC Read Up to 2,000MB/s Compatible with Apple MacBook Air (2013-2015, 2017), MacBook Pro (2013-2015), iMac (2013-2019), Mac Pro (2013), Mac Mini (2014) - Newegg.com
Amazon.com: 256GB SSD Hard Drive for Apple MacBook Pro Air 11" 13" 15" A1502 A1398 A1465 A1466 (Late 2013-2015) / OSX Sierra/Mac Pro A1481 : Electronics
MacBook Pro 13" Retina Display Early 2015 SSD Replacement - iFixit Repair Guide
SSUBX SSD For A1398 2015 MacBook Pro Retina
Amazon.com: Timetec 1TB(1000GB) MAC SSD NVMe PCIe Gen3x4 3D NAND TLC Read Up to 2,200MB/s Compatible with Apple MacBook Air(2013-2015, 2017), MacBook Pro(2013-2015), iMac(2013-2019), Mac Pro(2013), Mac Mini(2014) : Electronics
How to use an NVMe drive to upgrade your Mac's SSD | AppleInsider
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SSUBX SSD For A1398 2015 MacBook Pro Retina
Amazon.com: LEVEN 1TB Mac Upgrade NVMe SSD PCIe Gen3x4 Compatible with Apple MacBook Air (2013-2017) & Pro (2013-2015), Mac Mini (2013) & Pro (2014), iMac (2013-2019) : Electronics