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Internal structure – H3C Technologies H3C MSR 20-2X[40] User Manual

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WARNING!

On a mounting screw of your router chassis, there is an anti-dismantle seal of our company. You must
keep it in good condition when asking your sales agent for servicing. You can open the chassis yourself

but with permission of your sales agent and must operate following the related rules. The company is not
liable for any damage or consequence resulted from users' operation without permission.

Do not replace the hardware unless necessary and under the guidance of technical staff.

Ensure that no electricity is present before servicing the device to avoid bodily injuries.

Wear an ESD-preventive wrist strap when servicing the device, making sure it has good skin-contact.

Use the memory bars provided by our company only. Otherwise, anomalies might occur to the device.

Internal Structure

Figure 42 Internal structure of MSR 20-20/20-21

(1)

(2)

(3)

(4)

(5)

(6)

(1) Power module

(2) Memory bar slot

(3) ESM slot

(4) Fan module

(5) SIC slot1

(6) SIC slot2