No. Name
Description
1
Fan
module
The USG9520 has one fan module that has two fans. They are
deployed on the air intake vents of chassis air channels and work in
1+1 backup mode.
2
Protection
ground
terminal
The OT terminal of the ground cable is connected to the protection
ground terminal of the device, and the other terminal of the ground
cable is connected to the ground point of the cabinet or workbench or
the ground bar of the equipment room.
3
Air filter
The air filters of the USG9520 are deployed on the air intake vents of
chassis air channels to protect the device against dust.
4
DC power
module
The DC power supply system of the USG9520 consists of two DC
power modules that are connected to an external direct current
distribution panel and work in 1+1 backup mode.
5
ESD jack
The equipment end of the wrist strap is inserted into the ESD jack. For
the wrist strap to be effective, ensure that the device is grounded.
AC Chassis
Figure 1-34
Front panel of the USG9520 AC chassis
4/5
3
2
1
AUX
ACT
MPU
E8KE-X3-MPU
RUN
ALM
ACT
RESET
OFL
LINK
CLK
TOD
MGMT-ETH
CONSOLE
AUX
ACT
MPU
E8KE-X3-MPU
RUN
ALM
ACT
RESET
OFL
LINK
CLK
TOD
MGMT-ETH
CONSOLE
OFF
ON
~100-120V;
~200-240V;
50/60Hz;16A
20
HUAWEI
R4850G
OFF
ON
~100-120V;
~200-240V;
50/60Hz;16A
20
HUAWEI
R4850G
1
2
4
3
No. Name
Description
1
MPU
The Main Processing Unit (MPU) on the USG9520 is in charge of
system control and route information learning. It is the central control
unit of the device. The USG9520 MPUs work in 1:1 backup mode.
When the active MPU is faulty, the standby MPU immediately takes
over for it, ensuring service continuity.
2
LPU/SPU
slot
Holds an LPU or SPU.
HUAWEI USG9500 Series
Hardware Guide
1 Hardware Overview
Issue 03 (2017-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
55
