H3C S12500R Series Hardware Reference Manual page 11

Figure 1-8 Front and rear views of the S12500R-2L
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(1) SEU section
(3) Power supply section
Table 1-1 Section descriptions for the S12500R-2L
Section
SEU section
(The SEU slot number and SEU module
identifier are pink marked.)
Interface module section
(The edges or ejector levers of the interface
modules and the ejector lever pillow blocks on
the interface module slots are purple marked.)
Power supply section
Fan tray section
(The fan tray section is at the rear of the
chassis.)
(2) Interface module section
(4) Fan tray section
Description
No SEUs are provided with the device. Purchase SEUs
yourself.
The device has two SEU slots. You can install one SEU, or
two SEUs for redundancy. To install only one SEU for the
device, you can install it in either of the SEU slots.
No interface modules are provided with the device.
Purchase interface modules yourself.
The device has two interface module slots. You can install
one or two interface modules for the device as needed. To
install only one interface module for the device, you can
install it in either of the interface module slots.
No power supplies are provided with the device. Purchase
power supplies yourself.
The device has four power supply slots, with two on each
side of the chassis rear.
The device supports N+N (dual power input lines) and N+1
(single power input line) power supply redundancy.
Determine the number of power supplies based on the
power supply mode and system power consumption.
You can install a power supply in any of the empty power
supply slots.
No fan trays are provided with the device. Purchase fan
trays yourself.
The device provides two fan tray slots FAN1 and FAN2. As
a best practice, install two fan trays for redundancy.
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