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Inserting or Removing a PC Card from an M320 Routing Engine


The slots labeled PC CARD on the Routing Engine faceplate accept a Type I PC Card, as defined in the PC Card Standard published by the Personal Computer Memory Card International Association (PCMCIA). The router is shipped with a PC Card that contains the Junos OS. The PC Card can be used to copy Junos OS from the PC Card onto the Routing Engine. You can also copy Junos OS from the Routing Engine onto a PC Card, for example, to create a backup copy of upgrade software that you have obtained from Juniper Networks. Instructions for copying software to a PC Card are available at the Juniper Networks Support Web site ( After logging in, navigate to the Customer Support Center, then to the download page for Junos OS.


The software on a PC Card is loaded only onto the Routing Engine into which the PC Card is inserted. It is not automatically copied to the other Routing Engine.

Inserting a PC Card into an M320 Routing Engine

To insert a PC card (see Figure 1):

  1. Insert the PC card into either PC card slot on the Routing Engine, with the Juniper Networks logo facing downward.Caution

    Be sure to insert the PC card with the label facing downward. Inserting the PC card incorrectly might damage the Routing Engine.


    Do not install more than one PC card in the Routing Engine.

  2. Press the card firmly all the way into the slot.
  3. To verify the PC card is installed correctly, check that the corresponding slot LED (labeled 0 or 1 SLOT) is lit.
Figure 1: Installing a PC Card
Installing a PC Card

Removing an M320 PC Card

The PC card is inserted into one of the two slots—0 or 1—labeled PC CARD on the Routing Engine. To remove the PC card (see Figure 2):

  1. Have ready an antistatic mat, placed on a flat, stable surface.
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  3. On the Routing Engine faceplate, press the eject button on the right side of the PC card slot once to release the button. Press again to release the PC card.
  4. The PC card pops partially out of the slot. Grasp the card and pull it completely out of the slot.
  5. Place the PC card on the antistatic mat.
Figure 2: Removing a PC Card
Removing a PC Card