What is the Oem Comp QSFP28-100G-ER4L-BDH-CS3F?
The Oem Comp QSFP28-100G-ER4L-BDH-CS3F is a QSFP optical transceiver module, listed by the manufacturer as "100GBase SMF QSFP28 LWDM4 30km/40km with FEC 0°C to 70°C LC Duplex DDM (BOX + DML) 4.5W Compatibility: Cisco QSFP-100G-ER4L-S (CS3F)". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.