I have 17 of these units. They are all brand new , only one has been open for the pictures. 



Product Highlights

Built-in Macom Chip, Max. Power Consumption 3.5W
Tested in Targeted Switches for Superior Performance, Quality, and Reliability
Upgrade 10G Ethernet to 40G Without Changing the Existing Fiber Cabling Infrastructure
High-Speed Electrical Interface Compliant to IEEE 802.3ba
FS BOX - Support Real-time Configuration
Compliant to SFF-8436 and QSFP MSA
Hot Pluggable QSFP+ Form Factor
Class 1 Laser Safety
Digital Optical Monitoring Capability for Strong Diagnostic Capabilities



Cisco QSFP-40G-BD-RX

The Cisco QSFP 40-Gbps BiDi monitor is a pluggable optical module for use with link monitor hardware, such as the Cisco Nexus® Data Broker. Like the QSFP BiDi transceiver, it has a duplex MMF LC connector interface. The QSFP BiDi monitor is used only in the monitoring path of a link containing a passive optical tap splitter. The Cisco QSFP monitor offers the same specifications as the QSFP BiDi Transceiver, except that it does not transmit any signal, and thus eliminates the risk of interfering with the live BiDi link path.



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