1.1 USG9580........................................................................................................................................................................ 2

1.1.1 Device Overview......................................................................................................................................................... 2

1.1.2 USG9580 Components................................................................................................................................................ 4

1.1.3 Slot Layout and Boards............................................................................................................................................... 7

1.1.4 Power Supply System................................................................................................................................................ 11

1.1.4.1 Features and Distributed Architecture of the Power Supply System......................................................................11

1.1.4.2 DC Power Supply System...................................................................................................................................... 12

1.1.4.3 AC Power Supply System...................................................................................................................................... 16

1.1.5 Heat Dissipation System............................................................................................................................................20

1.1.5.1 System Air Channel................................................................................................................................................20

1.1.5.2 Fan Module.............................................................................................................................................................21

1.1.5.3 Air Filter................................................................................................................................................................. 23

1.1.6 Switch Fabric............................................................................................................................................................. 24

1.1.7 Control Plane............................................................................................................................................................. 25

1.1.8 Technical Specifications............................................................................................................................................ 26

1.2 USG9560...................................................................................................................................................................... 29

1.2.1 Device Overview....................................................................................................................................................... 29

1.2.2 USG9560 Components.............................................................................................................................................. 31

1.2.3 Slot Layout and Supported Boards............................................................................................................................ 33

1.2.4 Power Supply System................................................................................................................................................ 37

1.2.4.1 Features and Distributed Architecture of the Power Supply System..................................................................... 37

1.2.4.2 DC Power Supply System...................................................................................................................................... 38

1.2.4.3 AC Power Supply System...................................................................................................................................... 40

1.2.5 Heat Dissipation System............................................................................................................................................44

1.2.5.1 System Air Channel................................................................................................................................................44

1.2.5.2 Fan Module.............................................................................................................................................................45

1.2.5.3 Air Filter................................................................................................................................................................. 47

1.2.6 Switch Frabric............................................................................................................................................................47

1.2.7 Control Plane............................................................................................................................................................. 49

1.2.8 Technical Specifications............................................................................................................................................ 49

1.3 USG9520...................................................................................................................................................................... 52

Issue 03 (2017-12-15)

Huawei Proprietary and Confidential