3. Starting a print

Prints on the Ultimaker 2+ are started from the SD card. To start a print, take the following steps:

  1. Place the SD card in your computer.
  2. Slice your 3D model in Cura. Ensure that the nozzle size and material configuration in Cura match the configuration on your Ultimaker 2+.
  3. Save the print file (.gcode) via the “Save to removable drive” button to the SD card.
  4. Eject the SD card in Cura and remove it from your computer.
  5. Place the SD card in the Ultimaker 2+ (front side, next to the display).
  6. Go to "Print" and select the file you want to print.

[source]