Samsung PM863 1.92TB 2.5" SATA III Enterprise Internal SSD Model_Mac_Book_Pro_11_3 this means you can upgrade

this means you can upgrade to Micron brand memory without voiding your system’s original warranty

13 High Sierra and beyond

M471B5273EB0-YK0 Capacity 4GB (1x 4GB) Brand Samsung Speed DDR3L-1600 - 1600MT/s - PC3L-12800 Voltage 1

0Gb/s and 6Gb/s drives

2V Technology DDR4 Error Correction ECC Signal Processing Unbuffered Form Factor 288-pin EUDIMM Ranks Dual rank Configuration 1024M x8 Pieces in Kit 1 Compatibility

Samsung PM863 1.92TB 2.5" SATA III Enterprise Internal SSD Model_Mac_Book_Pro_11_3 this means you can upgradeReliability under Mixed Workloads Sustained Write Intensive Workloads Cost Effective Performance and Reliability Samsung PM883 2. 5 inch SATA Samsung SM883 2. 5 inch SATA Samsung PM1633a 2. 5 inch SAS Ideal For CDN's, Streaming or Webservers OLTP (Online Transaction Processing) and Database Servers Replacing outdated HDD storage with cost effective SSD's Sequential Read (128KB) All capacities: 550MB s All capacities: 540MB s Up to 1350MB s Sequential