40Gbase-ER4QSFP+ to LC Optical 40G Ethernet transceiver module, Single Mode, Uncooled 4x10Gb/s CWDM transmitter, Duplex LC connector, DDM ^^ CompatibilityCompatible With Cisco QSFP-40G-ER4 and other open switches, if you need transceiver compatible for other switches, you can contact us. ^^ Reach DistanceMaximum link length of 40km on Single Mode Fiber (SMF), Built-in digital diagnostic functions, including Tx/Rx power monitoring ^^ High QualityAll of products are manufactured under strict quality control system, every module has been tested one by one on different switches before shipping, to ensure compatibility with different brand of switch.
^^ After-sales Service30 days Free-Returned, 3 years Free Warranty and lifetime technology support, please contact us, any product quality and compatibility issues.