No. Name
Description
3
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.
4
AC power
module
The AC 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.
Figure 1-35
Rear panel of the USG9520 AC chassis
High touch current,earth connection essential
before supply and/or telecommunication
network connections
WARNING
ཝ䀜⭫⍷θ
൞䘔⭫Ⓠⴈ䙐ؗ㖇㔒ҁࢃൽ亱ݾ൦
Air Filter
STATUS
Don’t touch the
fan leaves before
they slow down.
ћ⾷൞伄儎䙕
ᰁ䖢ᰬ䀜ਬ
1
2
3
No. Name
Description
1
Fan
module
The USG9520 has one fan module with two fans on it. The fans are
deployed on the air intake vents of chassis air channels and work in
1+1 backup mode.
2
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.
3
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.
1.3.3 Slot Layout and Supported Boards
This section describes the layout of slots and supported boards on the USG9520.
Slots Layout
shows the slot layout on the USG9520.
HUAWEI USG9500 Series
Hardware Guide
1 Hardware Overview
Issue 03 (2017-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
56
