This sfp mini gbic transceiver module is designed for use with cisco network equipment and is equivalent to cisco part number glc sx mm rgd the rugged design of this receiver allows it to withstand more extreme temperatures 40dc to 85dc than a standard receiver 0dc to 75dc this transceiver is built to meet or exceed the specifications of the oem and to comply with multi source agreement msa standards this product is 100 functionally tested and compatibility is guaranteed the