Huawei ECC800 User Manual page 192

ECC800 Data Center Controller
User Manual
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Issue 06 (2020-01-02)
Insert the USB connector of the SMS module into the USB1 port on the ECC800e.
 The interval between pulling out and inserting the SMS module should exceed 20s.
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If no SMS module is displayed or the status indicates that the SMS module is not present, pull out
and insert the SMS module again.
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