What is the Oem Comp SFP-10G-L40-D21?
The Oem Comp SFP-10G-L40-D21 is a SFP+ optical transceiver, listed by the manufacturer as "10GBase SMF SFP+ DWDM CH21 40km 0C to 70C LC Duplex Dell compatible". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.