The model has inbuilt supports so no rafts or supports need to be generated. Print the case as is. You would only need 4 pins out of the 8 pins but sometimes not all the pins fit snugly through the holes.
Print Settings: 
I printed this using HIPS polymer
Layer height: 0.2 mm 
Line width: 0.5 mm 
Extruder temperature: 230°C
Bed temperature: 80°C
Note: apply 2 - 3 layers of glue stick to the print bed