The midplane connections between the adapters that are installed in the compute nodes to the I/O module
bays in the chassis are listed in the following table. Half-wide compute nodes support up to two adapters, and
full-wide compute nodes support up to four adapters.
Table 6. Adapter to I/O bay correspondence
I/O adapter slot
in the compute node
Slot 1
Slot 2
Slot 3
(full-wide compute nodes only)
Slot 4
(full-wide compute nodes only)
Lenovo Flex System SI4091 10Gb System Interconnect Module
Port on the adapter
Port 1
Port 2
Port 1
Port 2
Port 1
Port 2
Port 1
Port 2
Corresponding I/O bay in the chassis
Bay 1
Bay 2
Yes
Yes
Yes
Yes
Bay 3
Bay 4
Yes
Yes
Yes
Yes
10