Cisco® WSP-Q40GLR4L Compatible 40GBase-IR4 QSFP+ Transceiver (SMF, 1270nm to 1330nm, 2km, LC, DOM). A 100% Cisco® QSFP+ transceiver that operates at 1270nm to 1330nm over single-mode fiber, with a maximum reach of 2km connected via a LC connector. This Cisco® compatible QSFP+ transceiver has been programmed, uniquely serialized, and data-traffic and application tested to ensure it is 100% compliant and functional. Our QSFP+ transceiver will initialize and perform identically to Cisco's transceiver and is built to meet or exceed Cisco's specifications, and comply with MSA (Multi-Source Agreement) standards. The actual part shipped may have a different part number, but will be functionally identical and 100% compatible. Trade Agreements Act (TAA) versions of this part are available.