H3C Mini Series Manual de usuario

Preparing for installation

H3C Mini Unmanaged Ethernet Switches include the following

models:

•H3C Mini S8G-U (S8G-U).

•H3C Mini S9-PWR (S9-PWR).

•H3C Mini S16G-U (S16G-U).

•H3C Mini S24-U (S24-U).

•H3C Mini S24G-U (S24G-U).

Safety recommendations

To avoid any equipment damage or bodily injury, read the following

safety recommendations before installation. The recommendations

do not cover every possible hazardous condition.

•Do not place the switch near water or in a damp environment.

Prevent water or moisture from entering the chassis.

•Place the switch in a clean environment. Dust buildup on the

chassis might result in electrostatic adsorption, which reduces

lifespan of the device and can cause communication failure.

•Keep the air inlet and outlet vents of the switch free of

obstruction, and do not stack switches.

•Make sure the operating voltage is in the required range.

•Before using the switch, make sure the grounding cable of the

switch is correctly connected.

•Before cleaning the switch, remove the power cord from the

switch. Do not clean the switch with a wet cloth or liquid.

•Do not open the chassis while the switch is operating.

•To avoid damage caused by improper operation, do not open

the chassis even if the switch is powered off.

NOTE:

The switch is a class-A device and might cause electromagnetic

interference (EMI). Take actions to prevent EMI when

necessary.

Installing the switch

Table 1 Mounting options available for the switch

Switch

model Rack mounting Workbench

mounting Wall

mounting

S8G-U Not supported Supported Supported

S9-PWR Not supported Supported Supported

S16G-U Supported Supported Not supported

S24-U Supported Supported Not supported

S24G-U Supported Supported Not supported

Mounting in a 19-inch rack

No mounting brackets and screws are provided with the switch.

Prepare them yourself.

To install the switch in a 19-inch rack:

1. Verify that the rack is reliably grounded and is stable.

2. Use screws to attach the mounting brackets to both sides of the

chassis.

Figure 1 Attaching mounting brackets to the switch

3. Place the switch on a rack shelf in the rack. Push the switch in

until the oval holes in the brackets align with the mounting holes

in the front rack posts.

4. Use screws to secure the mounting brackets to the front rack

posts.

Figure 2 Mounting the switch in the rack

NOTE:

Mounting brackets are used only for securing the switch to the

rack. A rack shelf on the rack is required to bear the switch

weight.

Mounting on a workbench

1. Verify that the workbench is clean, sturdy, and reliably

grounded.

2. Place the switch bottom up, and clean the four recessed areas

in the chassis bottom with a soft and dry cloth.

3. Attach the rubber feet to the recessed areas.

4. Place the switch upside up on the workbench.

Mounting on a wall

You can use pan-head screws and the mounting holes in the switch

bottom to mount the switch on a wall.

No screws and screw anchors are provided with the switch. Prepare

them yourself. The following figure shows the screw and screw

anchor of the recommended size.

Figure 3 Screw and screw anchor of the recommended size

(mm)

To mount the switch on a wall:

1. Determine the hole diameter and depth based on the screw and

screw anchor size. Make sure the screw anchor can be inserted

into the hole and seated flush with the wall and the screw can be

fastened securely into the anchor.

If you use screws and screw anchors of the recommended size,

the hole diameter is 5 mm (0.20 in).

2. Drill two holes spacing 90 mm (3.54 in) on the wall. Make sure

the two holes are on a horizontal line.

3. Fasten a screw anchor into each hole and make sure the anchor

is flush with the wall.

4. Insert a screw into each anchor, leaving a minimum of 2.5 mm

(0.10 in) between the screw head and wall for mounting the

switch

5. Align the two mounting holes in the switch bottom with the

screws and hang the switch on the screws.

Figure 4 Mounting the switch on a wall

Connecting cables

Connecting the grounding cable

CAUTION:

Correctly connecting the grounding cable is crucial to lightning

protection and EMI protection.

The switch is not provided with a grounding cable. Prepare one

yourself.

To connect the grounding cable:

1. Use a Phillips screwdriver to remove the grounding screw from

grounding hole in the rear panel of the chassis. Use the

grounding screw to attach the ring terminal of the grounding

cable to the grounding hole. Fasten the grounding screw into the

grounding hole.

2. Use needle-nose pliers to make a loop at the other end of the

cable.

3. Remove the hex nut from a grounding post on the grounding

strip. Attach the loop to the grounding post and fasten the hex

nut.

Figure 5 Connecting the grounding cable

Connecting the power cord

Connecting the AC power cord

The S16G-U, S24-U, and S24G-U switches support AC power input.

To connect the AC power cord:

1. Make sure the switch is reliably grounded.

2. Connect one end of the AC power cord to the AC power

receptacle on the switch.

3. Connect the other end of the AC power cord to an AC power

source.

Connecting a power adapter

The S8G-U and S9-PWR switches support power input by using a

power adapter.

To connect the power adapter:

1. Connect the power cord to the power adapter.

This step is not required for an S8G-U switch.

2. Connect the DC connector of the power adapter to the DC

power receptacle on the switch.

3. Connect the plug of the power adapter to an AC power source.

Figure 6 Connecting a power adapter

Appendix A Chassis views and

technical specifications

Chassis views

Front panel

Figure 7 S8G-U front panel

Figure 8 S9-PWR front panel

Figure 9 S16G-U front panel

Figure 10 S24-U front panel

Figure 11 S24G-U front panel

(1) Power LED (Power)

(2) 10/100/1000Base-T copper port status LED

(3) Uplink port status LED

(4) 10/100Base-TX copper port status LED

(5) PoE status LED (6) PoE-MAX LED

(7) 10/100/1000Base-T copper port (8) DIP switch

(9) 10/100Base-TX copper port

7 8 12

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