Installing System Components 73Mezzanine CardsReplacing a Mezzanine Card (Optional)A mezzanine card is an optional component and can only be installed in an8-sled system board.System components and electronic circuit boards can be damaged bydischarges of static electricity. Working on systems that are still connected toa power supply can be extremely dangerous. Follow the simple guidelinesbelow to avoid damage to your system or injury to yourself.• If possible, wear a grounded wrist strap when you are working inside thesystem chassis. Alternatively, discharge any static electricity by touchingthe bare metal chassis of the system chassis, or the bare metal body of anyother grounded appliance.• Hold electronic system boards by the edges only. Do not touch thecomponents on the board unless it is necessary to do so. Do not flex orstress the system board.• Leave all components inside the static-proof packaging until you are readyto use the component for the installation.Installing a 1 GbE and 10 GbE Mezzanine CardPrior to installing a mezzanine card, remove the sled board from the chassis,see "Removing a Sled" on page 52.1 Remove the mezzanine card from its static-proof packing.2 With the PCIe connector facing up, place the mezzanine card in themezzanine bracket.3 Secure the card on the bracket with the provided screws.4 Insert the linking board into the mezzanine card.5 Secure the linking board to the bracket with the provided screw.CAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized is not covered bywarranty. Read and follow the safety instructions that came with the product.