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The BBU3910 supports only the UPEUd. Panel Figure 1-14 shows the UPEUd panel. Converts –48 V DC input power into +12 V DC and provides an output power of 650 Huawei Family of Network Products Icons PDF datasheet DBS3900 multiple configurations BBU+RRU Huawei DBS3900 default password for Huawei BBU3900.Manuals and User Guides for Huawei BBU3910. We have 1 Huawei BBU3910 manual available for free PDF download: Description BBU3910DescriptionContentsIssue 19 (2018-03-29)Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.iiContents1