USG6680 HARDWARE ILLUSTRATION

The USG6680 has both AC and DC models and uses an integrated chassis that contains the SPUA (main processing unit), SPUB (service engine), interface cards (two 2XG8GE expansion cards and an 8GEF expansion card), dual power modules, and fan module. You can also add some optional modules, such as hard disk and expansion cards, to improve system reliability and add more ports.

Front Panel

Figure 1 illustrates the front panel of the USG6680.

Figure 1 USG6680 front panel

Name	Description
Slot numbering	Indicates the slot numbering layout. Slots 1 through 4 are WSIC slots, and slots 5 through 8 are XSIC slots. Interfaces are numbered in the format of "interface type A/B/C", where: A is the slot number of the interface card. The slot number is the number described in this row. When a WSIC is installed in the lower part of an XSIC slot, the slot number of the WSIC is the XSIC slot number. B is the daughter card number, which is 0 because no daughter card is installed now. C is the interface number, which begins with 0 and is numbered from bottom to top and left to right.
2XG8GE expansion card (in slot 1)	The 2XG8GE card is mandatory^a and provides eight gigabit RJ45 Ethernet ports and two 10-gigabit SFP+ ports, but does not support hot swap. The interfaces on the interface card are numbered from GigabitEthernet 1/0/0 to GigabitEthernet 1/0/9 (left to right). For details on the 2XG8GE interface card, see 2XG8GE WSIC Interface Card.
2XG8GE expansion card (in slot 3)	The 2XG8GE interface card is mandatory^a and does not support hot swap. The interfaces on the interface card are numbered from GigabitEthernet 3/0/0 to GigabitEthernet 3/0/9 (left to right).
8GEF expansion card (in slot 2)	The 8GEF interface card is mandatory^a and provides eight GE SFP ports, but does not support hot swap. The interfaces on the interface card are numbered from GigabitEthernet 2/0/0 to GigabitEthernet 2/0/7 (left to right). For details on the interface card, see 8GEF WSIC Interface Card.
Expansion slot	Provides one WSIC slot and four XSIC slots for expansion cards. Table 2 lists the supported expansion cards. When a WSIC is installed in the lower part of an XSIC slot, install a filler panel on the empty upper part of the slot to ensure a normal air flow and keep out dust. NOTE: The slots are divided into two types: one for Wide Service Interface Cards (WSIC) and the other for Extended Service Interface Cards (XSIC). An XSIC is twice as high as a WSIC. An XSIC slot can also hold a WSIC card, but only in the lower part, and in this case, no other card can be installed in the upper part.
Protective ground terminal	The M4 OT terminal connects the PGND cable to a cabinet, the ground point of the workbench, or the ground bar in equipment room.
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 already grounded.
SN	The serial number that uniquely identifies the device. When applying for a license file, you must provide the SN of the device.
NOTE: a: The interface card is installed before shipment and can be moved to another slot.

The expansion slots on the USG6680 support the expansion cards listed in Table 2.

As the maximum output power of a USG6680-DC is 350 W, to prevent insufficient power supply, you can insert up to three WSICs without 2XG8GE or two WSICs with 2XG8GE in the five expansion slots.

**Table 2** Supported expansion cards
Expansion Card	Description
8GE WSIC Interface Card	Provides eight gigabit RJ45 Ethernet ports.
2XG8GE WSIC Interface Card	Provides eight gigabit RJ45 ports and two 10-gigabit SFP+ ports.
8GEF WSIC Interface Card	Provides eight gigabit SFP ports.
4GE-BYPASS WSIC Card	Provides two electrical bypass links.

When you install a WSIC card in slot 5/6/7/8, you can install it only in the lower part of the slot, namely, the part circled red in Figure 2.

Figure 2 Installation slots

Rear Panel

Figure 3 illustrates the rear panel of the USG6680.

Figure 3 USG6680 rear panel

Name	Description
Slot numbering	Indicates the layout of the slots, including the slot number and module type.
SPUA (the main processing unit, in slot SPU11)	The core component for system control and management. SPUA provides an out-of-band management port, console port, and USB port for management access. SPUA can optionally provide one or two hard disks (SM-HDD-SAS300G-A, SM-HDD-SAS600G-A or SM-HDD-SAS1200G-A) as required. SPUA is installed in slot SPU11 and cannot be removed.
SPUB (the service engine, in slot SPU12)	SPUB has an IAE to provide content security. SPUB is installed in slot SPU12 and cannot be removed.
Fan module (in slot FAN13)	The fan module provides air flow for heat dissipation. The slot numbering layout and ESD jack are also located in the fan module. The fan module supports hot-swapping and can be replaced without interrupting device operation. However, to prevent overheating, do not operate the device without a functioning fan module for more than one minute. For details, see SUA2FANA.
Power modules (in slots PWR9 and PWR10)	Provides power input and distribution for the device. Two DC or AC power modules are mandatory to provide 1+1 power redundancy. If one power module fails, the other can support the entire system so that you can replace the faulty power module without interrupting device operation. For details, see 700 W AC Power Module or 350 W DC Power Module.
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 already grounded.

USG6680 Hardware

USG6680 HARDWARE ILLUSTRATION

USG6680 HARDWARE ILLUSTRATION

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