How to verify a genuine CISCO SFP? 

How to Identify the Genuine Cisco SFP? 

How to verify if your CISCO SFP is Genuine or Fake? 

How to check SFP module in Cisco switch command?

Step 1, Check the Cisco SFP lable:

Green BP Hologram Lable;

Gold Strip Lable.

Step 2, Check Cisco sfp serial number in cisco switch: Show idprom interface Show inventory

For more

https://wa.me/+8618938853013 

https://youtu.be/Vj342Su0A8U