{"product_id":"cisco-qsfp-40g-csr4-optical-transceiver-module","title":"Cisco QSFP-40G-CSR4 Optical Transceiver Module","description":"\u003cdiv\u003e\u003cp\u003eThe Cisco QSFP-40G-CSR4 QSFP+ transceiver provides 40 Gigabit Ethernet over multimode fiber for high-speed interconnects between switches, routers, and servers, with reach up to 300 m on OM3 and 400 m on OM4 fiber. This QSFP+ fiber transceiver uses an MPO\/MTP connector and supports 40GBASE-CSR4 at 850 nm on multimode fiber, compatible with Cisco switches and routers that have QSFP+ ports. Designed for data centers, cloud infrastructures, and high-performance network aggregation, it enables short- to medium-distance optical uplinks and inter-switch connectivity in spine-leaf architectures and high-density server environments. Key specifications: Manufacturer Part Number QSFP-40G-CSR4; Product Type QSFP+ Transceiver Module; Data Rate 40 Gbps; Standard 40GBASE-CSR4; Wavelength 850 nm; Fiber Type Multimode Fiber (MMF); Maximum Distance Up to 300 m on OM3 \/ 400 m on OM4; Connector MPO\/MTP; Manufacturer Cisco Systems.\u003c\/p\u003e\u003c\/div\u003e","brand":"Cisco","offers":[{"title":"Used","offer_id":50558476255534,"sku":"Used","price":53.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Cisco_QSFP-40G-CSR4.jpg?v=1751360891","url":"https:\/\/plgautomation.com\/products\/cisco-qsfp-40g-csr4-optical-transceiver-module","provider":"PLG Automation ","version":"1.0","type":"link"}