Diameter of 5G M.2 TO USB 3.0-KIT PRO V2.0

IoT Modules 5G Module
1

I have purchased the ‘5G M2 TO USB3.0-KIT PRO V2.0’ and would like to know the diameter of its 5V/3A power adapter.

It seems there are various sizes available, such as 5.5mm/2.5~2.1mm. I’m not sure which size of power adapter to buy. Please provide the accurate diameter.

Thank you.

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11387×1040 346 KB

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21387×1040 248 KB

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Dear @soohyun
Is the PCB board Quectel? If yes, could you give me more information? like the lable and SN, I need to check internally.