Installing the Hardware
Installing the ATM PHY Cards
Each ATM line card has two slots available for PHY cards. One ATM PHY card can be installed into each available slot. You will need a #2 Phillips screwdriver to perform this procedure. Figure 35 shows an example of how to install a PHY card. The procedure following the figure describes how to do this.
Seat screws into mounting holes, then press PHY card
to fully engage connector
ATM Board 
Guide Rails
Phy Card
Figure 35. Installing an ATM PHY card
To install a PHY card into an ATM line card:
1.Use a Phillips screwdriver to loosen the two captive screws that hold the option slot cover in place.
2.Save the option slot cover.
3.Hold the PHY card by the edges and position it so that it is parallel with the slot opening.
4.Insert the PHY card through the opening in the system unit by aligning the sides of the PHY card with the card guide.
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