RAM upgrade and/or SSD drive – what's the benefit?
SSD in the new MacBook Pro with Touch Bar can't be upgraded
MacBook Pro 2016 A1708 SSD Upgrade/Replacement - YouTube
How to install an SSD on a 15-inch Retina MacBook Pro
1TB SSD Kit for Mac Pro - Apple
MacBook Pro 15 A1398 How to install M2 SSD upgrade - YouTube
Amazon.com: MCE Technologies 2TB SSD for MacBook Pro 2015 15-inch Only: PCIe-Based 4 Lane (x4) NVMe 8.0GT/s SSD Flash Storage Upgrade - 2900MB/s Read, 2100MB/s Write, Requires macOS 10.13.x (High Sierra) or
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
Upgrade SSD on Mid-2015 15" Retina. Which SSD? | MacRumors Forums
15" 15 Inch Retina MacBook Pro A1398 Mid 2015 Complete Disassembly (Almost) SSD Upgrade - YouTube
Amazon.com: MCE Technologies 1TB Internal SSD Flash Upgrade for MacBook Pro Retina (Mid 2012 - Early 2013) - Includes USB 3.0 Enclosure for Original Drive & Install Kit! : Electronics