40G QSFP+ QSFP-40G-CSR4 400m 850nm MPO-12/UPC Module, Cisco

The 40G QSFP+ QSFP-40G-CSR4 400m 850nm MPO-12/UPC Module, Cisco is a QSFP+ optical transceiver delivering 42Gbps (4x 10.5Gbps) over MMF. Operating at 850nm with a MTP/MPO-12 Male interface, it reaches 400m@OM4 and is compliant with 40G Ethernet, SATA/SAS3, IEEE 802.3ba, MSA Compliant. Built-in digital diagnostics give real-time access to operating parameters, making the module easy to deploy and maintain in 40G Ethernet data center and enterprise network environments.

Product Highlights

• QSFP+ form factor, 42Gbps (4x 10.5Gbps) data rate
• Wavelength: 850nm
• Connector: MTP/MPO-12 Male
• Reach: up to 400m@OM4
• Fiber media: MMF
• Operating temperature: 0 to 70°C (32 to 158°F)

Network architects choose the 40G QSFP+ QSFP-40G-CSR4 400m 850nm MPO-12/UPC Module, Cisco for 40G Ethernet data center and enterprise network environments: it runs 42Gbps (4x 10.5Gbps) over MMF and reaches 400m@OM4. The MTP/MPO-12 Male interface and 850nm optics match the standard cabling plant used in modern data halls, so existing trunks can be reused. It is interoperable with Cisco platforms and replaces the Cisco part QSFP-40G-CSR4 directly.

Compliance: 40G Ethernet, SATA/SAS3, IEEE 802.3ba, MSA Compliant. For projects standardized on Cisco hardware, this product replaces the QSFP-40G-CSR4 directly, with identical fit and function. Every unit's EEPROM coding and link behavior are verified on real host equipment in our lab, so what arrives at your site is ready to use.

Our part number for this module is QSFP-CSR4-40G. When ordering, just let us know the quantity and whether you need the compatibility coding for a particular switch brand; labeling and packaging can also follow your channel requirements.

Because we are the factory, customization is straightforward: non-standard lengths, different jacket materials, specific polarity or breakout wiring, and compatibility programming for particular switch brands are all routine work for us. Small trial orders are accepted so you can verify quality before scaling up.

Our warehouse keeps fast-moving transceivers and cables ready for same-week dispatch. Courier, air freight and sea freight options are all available depending on your budget and schedule, and we consolidate multiple items into one shipment whenever it saves you cost.

We do not ship untested stock. Each transceiver and cable is powered up in our test racks, checked for link stability, transmit power, receiver sensitivity and diagnostic readouts, and only then packed for delivery. This factory-level testing is one reason network integrators keep reordering from us year after year.

Standard packing is an anti-static bag plus blister protection, with cartons sized to keep products from moving in transit. We apply our standard labels by default; neutral packing or customer-branded labels, part number stickers and serial barcodes are all available on request.