- Joined
- Nov 14, 2010
- Messages
- 369
- Reaction score
- 1
- Points
- 18
- Location
- Orange County, NY
- Your Mac's Specs
- iMac-21.5"(2017):OS Catalina 10.15.2 IOS13.3 iPhone 8+ iPadpro v2
Son-in-law surprised me with early Christmas gift: 2 eight GB memory cards for my iMac. I currently have 4 two GB cards installed. Questions: which 2 slots do I use for the new cards? Can I also add 2 of the two GB cards to bring total memory to 20GB or do all cards need to be same size?