Upgraded 2013 21.5" iMac and it is boots in under 30 seconds!

Il Mio Problema

Installed 16GB of Ram and 512GB SSD

La Mia Riparazione

It went great, definitely take your time and keep track of where screws go

Il Mio Consiglio

As I removed screws and did the steps, I kept the parts in zip lock bags together, which made putting it back together that much easier!