The HUAWEI R4850N2 is a high-efficiency power supply unit designed for use with Huawei Communication's 1U rectifier module PSU. The power supply is compact, highly reliable, and provides a stable output voltage for the operation of various electronic devices.

HUAWEI 03030YHM TN13VA401 is a 4-channel variable optical attenuator board foruawei optical transmission equipment, mainly used in Huawei OSN 9800 series devices.

ERICSSON RRUS 12B1 KRC 161 327/2 is the remote radio unit (RRU) the Ericsson RBS 6000 series baseband unit (DU), where "KRC 161 327/2" denotes hardware version and serial number information.‌ This model supports 2x2 MIMO technology and is designed for 40W power configuration, commonly seen in LTE or 5 network deployments.

ERICSSON RRUS 01B1 KRC 118 76/1 is a model of Remote Radio Unit (RRU for RBS6601, mainly used for radio frequency signal processing in wireless communication base stations.

ERICSSON RBS 6501 B3 KRD 901 103/1 is a radio unit commonly used telecommunications base station equipment. It is equipped with an AC built-in antenna RF receiver and transmitter, model KRD 901 103/1 4, suitable for base station systems of the RBS 6501 series.