IBM Flex System x240 M5 Product Manual page 22

IBM Flex System PCIe Expansion Node
The x240 M5 supports the attachment of the IBM Flex System PCIe Expansion Node. By using the IBM
Flex System PCIe Expansion Node, more PCI Express cards can be attached, such as High IOPS SSD
adatpers, fabric mezzanine cards, and next-generation graphics processing units (GPU) to supported IBM
Flex System compute nodes. This capability is ideal for many applications that require high performance
I/O, special telecommunications network interfaces, or hardware acceleration that uses a PCI Express
card. The PCIe Expansion Node supports up to four PCIe 2.0 adapters and two more Flex System
expansion adapters.
The PCIe Expansion Node is attached to a Flex System compute node, as shown in the following figure.
Figure 8. PCIe Expansion Node attached to a compute node
The ordering information for the PCIe Expansion Node is shown in the following table.
Table 12. Ordering part number and feature code
Part number Feature code
81Y8983 A1BV
The PCIe Expansion Node has the following features:
Support for up to four standard PCIe 2.0 adapters:

Two PCIe 2.0 x16 slots that support full-length, full-height adapters

Two PCIe 2.0 x8 slots that support half-length, low-profile adapters

Support for PCIe 3.0 adapters by operating them in PCIe 2.0 mode

Support for one full-length, full-height double-wide adapter (that uses the space of the two full-length,

full-height adapter slots)
Support for PCIe cards with higher power requirements; a single adapter card (up to 225W) or to two

adapters (up to 150W each)
Two Flex System I/O expansion connectors to further expand the I/O capability of the attached

compute node
Note: The use of the PCIe Expansion Node requires that the x240 M5 Compute Node have both
processors installed.
For more information, see the IBM Redbooks Product Guide on the IBM Flex System PCIe Expansion
Node, which is available at this
IBM Flex System x240 M5 Product Guide
Description
IBM Flex System PCIe Expansion Node
website:http://www.redbooks.ibm.com/abstracts/tips0906.html?Open
Maximum supported
1
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