HP Color LaserJet 4650 Printer series - Manual (Page 242)

4. Firmly insert the HP Jetdirect print server card into the EIO slot. Insert and tighten the
retaining screws that came with the print server card.
5. Connect the network cable.
6. Reconnect the power cable, and turn the printer on.
228 Appendix A Working with memory and print server cards ENWW