Issue
Customer found that his laptop can connect with some of P3 relay through front USB port, but some of P3 relays can’t be connected with Easergy Pro.

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Product Line

Easergy P3
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Environment
All firmware version
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Root Cause
Please check the laptop-->Device Manager-->USB Serial Port-->Port settings-->Advanced-->COM Port Number.
If all the COM port are “in use” status, so no more COM port can be used for new P3 relays.



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Solution
It is necessary to release laptop USB Serial COM ports, or use another laptop to connect Easery Pro with P3 relay.

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