QSFP-40G-CSR-S — QSFP+ 40 Gbps

The QSFP-40G-CSR-S from Cisco is a 40 Gbps QSFP+ transceiver designed for multimode fibre (MMF) links with a reach of up to 440 metres. With a duplex LC UPC connector, IEEE 10GBASE standard, and duplex fibre cable, this module achieves distances well beyond those of DAC or AOC cables while remaining within the MMF domain, which clearly differentiates it from long-reach SMF variants. Operating temperature range: 0 to 70 °C.

This module is the solution of choice for inter-room or inter-building links over already-deployed OM3/OM4 fibre, particularly in enterprise campuses or multi-aisle data centres. Network architects seeking to consolidate 40G aggregation links without relying on single-mode fibre will value its flexibility. Genuine Cisco hardware, manufacturer warranty.