Huawei's next-generation BBU5900 features include: BBU baseband unit box "6 in 1", with 6 mode (GSM, UMTS, LTE FDD, LTE TDD, NB-IoT, 5G NR) in one box; transmission capacity of 50Gbps to meet the requirements of multi-band, multi-mode and Massive MIMO co-site deployment; with a series of multi-antenna RF modules ...
In the next link, you can find specifications for this device:
https://pdfcoffee.com/bbu5900-hardware-descriptionv100r013c1001pdf-cn-pdf-free.html