HP LaserJet P4015 Printer series - Manual (Page 143)

Install HP Jetdirect print server cards
Follow these procedures to install or remove an EIO card.
Install an HP Jetdirect print server card
1. Turn off the product.
2. Remove the two screws and cover plate from the EIO slot on the back of the product.
NOTE: Do not discard the screws or the cover plate. Save them for future use if you remove the
EIO card.
3. Install the EIO card in the EIO slot and tighten the screws.
ENWW Install memory, internal USB devices, and external print server cards 131