Pcie Riser Location And Differences - Sun Oracle Sun Server X4-2 Service Manual

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PCIe cards in all slots are installed on vertical risers. You must remove the relevant
riser to remove and replace a PCIe card. You must remove all three PCIe risers when
replacing the motherboard.
Caution – These procedures require that you handle components that are sensitive
to electrostatic discharge. This sensitivity can cause the components to fail. To avoid
damage, ensure that you follow antistatic practices as described in
Measures" on page 42.
Caution – Ensure that all power is removed from the server before removing or
installing PCIe risers, or damage to the PCIe cards installed in the risers might occur.
You must disconnect all power cables from the system before performing these
procedures.
The following sections provide information to assist you in servicing PCIe risers:
"PCIe Riser Location and Differences" on page 75
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"Remove a PCIe Riser From PCIe Slot 1 or 2" on page 76
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"Install a PCIe Riser Into PCIe Slot 1 or 2" on page 78
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"Remove a PCIe Riser From PCIe Slots 3 and 4" on page 80
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"Install a PCIe Riser Into PCIe Slots 3 and 4" on page 82
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Related Information
"Servicing PCIe Cards (CRU)" on page 84
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PCIe Riser Location and Differences

The PCIe riser that installs in PCIe slots 3 and 4 is different than the risers in PCIe
slots 1 and 2. The riser for slots 3 and 4 supports two cards: a standard PCIe card and
an internal HBA card. Do not attempt to install the PCIe riser for PCIe slots 3 and 4
in slots 1 or 2, and vice versa.
Servicing CRUs That Require Server Power-Off
"Take Antistatic
75