Figure 8. Chassis midplane location and connectors
1 PSU cage
3 PDB connectors
2 Chassis midplane 4 PSU connectors
1 PSU cage: For the PSU slots, see “Chassis rear view” on page 23.
2 Chassis midplane: For the replacement of the PSU cage and Chassis midplane, see “PSU cage and
chassis midplane replacement” on page 64
.
3 PDB connectors: When a node is installed in the chassis, the power distribution board (PDB) in the node is
connected to the corresponding connector on the chassis midplane.
4 PSU connectors: When a hot-swap power supply unit (PSU) is installed in the PSU cage, the PSU is
connected to the corresponding connector on the chassis midplane.
Notes:
• The firmware of the chassis midplane can be updated via Lenovo XClarity Controller (XCC) and Lenovo
XClarity Essentials OneCLI (LXCE OneCLI). Only the caretaker node can perform this update.
• By default, the caretaker node is automatically selected by the PSoC firmware on the chassis midplane,
unless otherwise designated.
• Go to
“Update the firmware” on page 185 for more information on firmware updating tools.
Chapter 2. Hardware components 27
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