Below is the list of MacBook available for RAM upgrades for the moment (We only accept Mail-in upgrade for now).

1. MacBook Pro (16-­inch, 2019, Four Thunderbolt 3 Ports) - 64GB RAM max
2. MacBook Pro (15-­inch, 2019, Four Thunderbolt 3 Ports) - 64GB RAM max
3. MacBook Pro (15-­inch, 2018, Four Thunderbolt 3 Ports) - 32GB RAM max(for now)
4. MacBook Pro (13-­inch, 2019, Four Thunderbolt 3 Ports) - 16GB RAM
5. MacBook Pro (13-­inch, 2019, Two Thunderbolt 3 Ports) - 16GB RAM
6. MacBook Pro (13-­inch, 2018, Four Thunderbolt 3 Ports) - 16GB RAM
7. MacBook Pro (13­-inch, 2017, Two Thunderbolt 3 Ports) - 16GB RAM
8. MacBook Pro (13-­inch, 2016, Two Thunderbolt 3 Ports) - 16GB RAM
9. MacBook Pro (13-­inch, 2017, Four Thunderbolt 3 Ports) - 16GB RAM  
10. MacBook Pro (13-­inch, 2016, Four Thunderbolt 3 Ports) - 16GB RAM
11. MacBook Air (13-inch, 2017) - 16GB RAM
12. MacBook Air (13-inch, Early 2015) - 16GB RAM
13. MacBook Air (11-inch, Early 2015) - 16GB RAM  
14. MacBook Pro (Retina, 13-inch, Early 2015) - 16GB RAM
15. iMac (21.5-inch, Late 2015) - 16GB RAM
16. MacBook Air (11-inch, Early 2014) - 8GB RAM (16GB need to modify EFI)
17. MacBook Air (13-inch, Early 2014) - 8GB RAM (16GB need to modify EFI)
18. Mac Mini (Late 2014) - 16GB RAM
19. MacBook Air (13-inch, Mid 2013) - 8GB RAM (16GB need to modify EFI)
20. MacBook Air (11-inch, Mid 2013) - 8GB RAM (16GB need to modify EFI)