FARGO electronic STYLUS NX625 - Manual (Page 6)

6 Loading Paper
4. Slide the edge guides against the edges of the paper, but not too tightly.
5. Insert the cassette back into the printer.
Note:
Keep the cassette flat as you insert it.
The paper may slide forward slightly as you insert the cassette. This is normal.
Do not remove or insert the cassette while printing or copying.
6. Slide out the output tray and raise the stopper.
Note:
If you are using legal-size paper, do not raise the stopper.