1. Introduction
![1. Introduction](https://cdn.help.prusa3d.com/wp-content/uploads/2024/09/a2499625c3c069647174add68d3ccbf9-300x225.jpg)
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Original Prusa i3 MK3/MK3S/MK3S+ to MK4S/MK3.9S upgrade | Prusa Knowledge Base