Good afternoon, thanks for contacting On Time Supplies! I'm reviewing your question and the toner for the CP2025 would be the same regardless of the model.
Here is the low down on the letters on the end of toners: DN indicates Duplex Network, N indicates Network, X indicates a high yield toner option that may be available.
So no matter what model, the ink cartridge is the same! Hope that this helps and makes your life a little bit better. Some times the manufacturers add letter and numbers that can confuse customers like you.