HPE Aruba 1G SFP LC SX transceiver J4858D-RFB is a refurbished optical module for connecting network equipment over multimode fiber. Its SFP interface and LC SX specification identify the connection type and shortwave optical standard.
It supports a 1 Gbit/s data rate and a maximum link distance of 500 m over OM2 multimode fiber. The listing describes it for use with selected Aruba switches, making it a network link component for compatible equipment. This is the refurbished J4858D-RFB version.