H3C Technologies H3C S7500E Series Switches - Manual (Page 104)

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Chassis
The S7500E series consists of a switching and routing processing unit (SRPU) section, line processing unit
(LPU) section, power supply module section, and fan tray section. The following uses an S7503E as an
example.
Figure 58 Front view of the S7503E
Table 24 Description of the sections of the chassis
Section Description Ordering remarks
① SRPU section
Provides slots for SRPUs. SRPUs
have pink edges. They must be
inserted in the slots with pink
edges.
SRPUs are required but not shipped with the switch.
• The S7500E series support various types of SRPUs.
You can select them as needed. For more information,
see "Appendix B Pluggable module ordering guide."
• You can install two SRPUs (for active and standby
switchover) for all models of the S7500E series except
the S7503E-S.
② LPU section
Provides slots for LPUs. Line
processing units (LPUs) have
purple edges. They must be
inserted in the slots with purple
edges.
LPUs are required but not shipped with the switch.
The S7500E series support various types of LPUs. You
can select them as needed. For more information, see
"Appendix B Pluggable module ordering guide."