Power Supply Unit Description Installation Maintenance
3.5 PWR350D DC power supply
unit
Inserted into a
power supply slot.
The device supports
two power supply
units.
Front-access design,
removable.
3.2 Power Supply Unit Connection Layouts
This section illustrates the connection between each power supply unit and the motherboard.
3.2.1 Single DC Power Supply Unit
Figure 3-1 shows the layout of single DC power supply unit connection to motherboard.
Figure 3-1 Layout of single DC power supply unit connection to motherboard
Motherboard
GND12V
PWR
NEG RTN
1. NEG: Power cable
2. RTN: Power ground cable 3. GND: Grounding
After the DC power is transmitted to the PWR module, the PWR module outputs 12 V voltage,
and then the motherboard provides power for the entire device.
3.2.2 Two DC Power Supply Units
Figure 3-2 shows the layout of dual DC power supply unit connection to motherboard.
Huawei AR1200&2200&3200 Series Enterprise Routers
Hardware Description 3 Power Supply Units
Issue 03 (2012-04-20) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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