H3C S7502 Ethernet Switch Installation Manual

Installation Manual
H3C S7502 Ethernet Switch Chapter 1 Product Overview
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1.11.3 Backplane
The backplane of an S7502 Ethernet switch is located in the integrated chassis and
implements high-speed data interconnection between SRPU and LPU and system
management and control signal interconnection.
The backplane mainly functions in:
z Providing communication channels for signal exchange between cards.
z Providing support for card hot-swapping
z Auto-detecting the card type inserted at slots
z Leading in electric power for distributed supply to the system
z Leading in signal lines for monitoring the fan tray and power frame
(3)(2)
(1)
(1) Power module socket (2) Card socket
(3) Fan tray socket
Figure 1-28 Backplane of the S7502
1.11.4 Power Supply System
 Note:
z The S7502 supports either AC input or DC input. You can choose one as needed.
z Although one power module can ensure the normal operation of the system, the
S7502 provides two power module slots to implement 1+1 redundancy backup.
z The power module on the S7502 is hot-swappable.
The AC power module or DC power module of the S7502 meets the following
requirements:
z Both an AC power module and DC power module have exactly the same
dimensions and ports.
z Both an AC power module and DC power module have exactly the same type of
output plug-in at the same position.
z An AC power module and DC power module cannot be both inserted in one
S7502.