Cisco QSFP-40G-SR4 40GBASE-SR4 Transceiver – Open Box

The Cisco QSFP-40G-SR4 is a short-reach optical transceiver designed for 40 Gigabit Ethernet applications over multimode fiber. Supporting distances up to 150 meters depending on the fiber type, it provides efficient and reliable high-speed connectivity for data centers, enterprise backbones, and cloud infrastructures.

Engineered for performance and compatibility, this transceiver utilizes four parallel lanes at 850 nm to deliver 40GbE data rates with low power consumption. Its compact QSFP+ form factor makes it a cost-effective solution for high-density environments, while ensuring compliance with industry standards for seamless deployment.

✔ Key Features & Benefits

✔ High-Speed Connectivity – Enables 40GbE links for bandwidth-intensive environments such as data centers and enterprises.
✔ Flexible Reach – Supports up to 150 m depending on OM2, OM3, or OM4 multimode fiber, offering deployment flexibility.
✔ Compact Form Factor – QSFP+ design supports high-density switch and router configurations.
✔ Energy Efficient – Operates at only 1.5 W power consumption, lowering operational costs.
✔ Reliable Compatibility – Fully compliant with IEEE and MSA standards, ensuring smooth integration into existing infrastructure.

✔ Ideal Uses

✔ Data centers requiring short-reach 40G backbone links.
✔ Cloud environments scaling up high-performance networks.
✔ Enterprise LAN backbones upgrading to 40GbE.
✔ High-density switch and router interconnects.

✔ Specifications

✔ Condition: Open Box – New device with no signs of use. Packaging may be opened. Device has been tested and is 100% functional.
✔ Brand: Cisco
✔ Model: QSFP-40G-SR4
✔ Type: 40GBASE-SR4 QSFP Transceiver
✔ Dimensions: 13.5 × 18.4 × 72.4 mm
✔ Wavelength: 850 nm
✔ Fiber Type: Multimode Fiber (MMF)
✔ Core Size: 50 µm
✔ Modal Bandwidth: 500 (OM2), 2000 (OM3), 4700 (OM4) MHz-km
✔ Reach: 30 m (OM2), 100 m (OM3), 150 m (OM4)
✔ Data Rate: 40 Gbps (4 lanes at 10 Gbps)
✔ Connector: MPO/MTP
✔ Power Consumption: 1.5 W
✔ Transmit Power: -7.6 to -1.0 dBm per lane
✔ Receive Power: -9.5 to -2.4 dBm per lane
✔ Wavelength Range: 840–860 nm
✔ Operating Temperature: 0 to 70 °C (32 to 158 °F)
✔ Storage Temperature: -40 to 85 °C (-40 to 185 °F)
✔ Standards: GR-20-CORE, GR-326-CORE, GR-1435-CORE, IEEE 802.3ba, IEEE 802.3ae, QSFP+ MSA SFF-8436, SFP+ MSA SFF-8431/8461, RoHS 6
✔ Safety: UL E116441 compliant cable jacket, ELV compliant copper cables
✔ Warranty: 3 Month Carry-in Warranty
✔ What’s in the Box: 1 × Cisco QSFP-40G-SR4 Transceiver Modul