• To control airflow for adequate system cooling, personal safety, and EMI containment duringoperation, install a blank in any empty line card slot. Install an operational line card module or a blankin each line card slot. Always replace a line card or blank panel immediately.• The blank panels for RPMs and line cards are different sizes (line card blanks are smaller); be sure toinstall the correct blank panels in each empty slot.• C9010 line cards are hot-swappable. The C9010 supports high availability.• Do not press on the port connectors when you install a line card.Figure 23 shows the types of line cards supported in a C9010.Figure 23. Example of Line Cards Supported in the C90101. On a full-width line card, open the left and right ejector levers by pressing the orange thumb tabs.The two ejectors levers spring open.On a half-width line card, there is only one ejector lever; open the left lever in the same way bypressing the orange thumb tab so that the lever pops out. For the location of the thumb tabs andejector levers, see Installing an RPM.2. Hold the card assembly by the metal carrier edges. Avoid touching the printed circuit board andconnector pins.3. You can insert a line card into any line-card slot. Align the card with the guide in the chassis slot.While holding the ejector lever, press on any convenient edge of the front panel to slide the carduntil you feel the backplane connectors engage the chassis backplane. Be sure not to press on theport connectors.4. Push in the lever until the thumb tab pops up and the card is fully inserted in the slot.5. Repeat Steps 1 to 4 to install additional line cards in the chassis.6. Install a blank panel in all slots that do not have a line card. Press the orange tab on a blank to openthe ejector lever. Holding the lever, insert the blank to cover the open slot. Push in the lever tosecure the blank in place.32 Installing the Hardware