HP Color LaserJet CM4730 Multifunction Printer series - Manual (Page 356)

Install an HP Jetdirect or EIO print server card
The HP Color LaserJet CM4730 MFP is equipped with an embedded HP Jetdirect print server port. If
desired, you can install an additional I/O card in the available EIO slot.
1. Turn the MFP off.
2. Disconnect all power and interface cables.
340 Appendix E Install memory and print server cards ENWW