Heat Dissipation - Huawei S2700-EI Series Hardware Description

S2700-EI Series Ethernet Switches
Hardware Description
Figure 2-10 PoE power supply by AC power modules
Motherboard
L: Live wire N: Neutral wire PGND: Protective ground
Non-PoE Power Supply Configuration
The non-PoE models in the S2700-EI series use internal power modules and do not support
pluggable power modules.
Figure 2-11
module (PWR) receives power from an external power source and provides a 12 V output to the
chassis.
Figure 2-11 Power supply by a single AC power module on a non-PoE model
Motherboard
L: Live wire

2.3.6 Heat Dissipation

Table 2-10
Issue 07 (2014-10-25)
-53V RTN
12V
PWR
wire
shows the power supply connections on the non-PoE models. An internal AC power
12V
PWR
N: Neutral wire PGND: Protective ground wire
lists the heat dissipation methods of the S2700-EI series switches.
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Copyright © Huawei Technologies Co., Ltd.
GND
L N PGND
GND: 12 V reference
ground
GND
L N PGND
2 Chassis
RTN: -53 V reference
ground
GND: 12 V reference ground
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