very high-density 216-pin PCIe connector. Installing I/O adapter cards allows the server to connect with switch
modules in the Flex System Enterprise Chassis. Each slot has a PCI Express 3.0 x16 host interface and all slots
support the same form-factor adapters.
Note: A second processor must be installed in order to use I/O adapter slots 3 and 4 in the x440 compute node.
This is because the PCIe lanes used to drive I/O slots 3 and 4 are routed to processors 2 and 4.
Figure 6 shows the location of the I/O expansion connectors.
Figure 6. Location of the I/O adapter slots in the Flex System x440 Compute Node
All I/O adapters are the same shape and can be used in any available slot. A compatible switch or pass-through
module must be installed in the corresponding I/O bays in the chassis, as indicated in the following table. Installing
two switches means that all ports of the adapter are enabled, which improves performance and network availability.
Table 13. Adapter to I/O bay correspondence
Flex System x440 Compute Node (7917)
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