Cisco QSFP-200G-SR4-S Compatible 200G QSFP56 SR4 Optical Transceiver Module | HYTOPTODEVICE

Product Detail：
HYTOPTODEVICE 200G QSFP56 Module | Cisco Compatible 200GBASE-SR4 Optical Transceiver Module(MMF, 850nm,100m, MPO-12, DOM)

      The QSFP-200G-SR4-S is a high-performance Cisco compatible 200G QSFP56 optical module,designed for 200GBASE Ethernet throughput over MTP/MPO-12 connectors using OM4 multimode fibre (MMF),reach up to 100m.  Operating over a wavelength of 850nm, this module integrates 4 parallel independent electrical lanes utilizing advanced 4x 50Gbps PAM4 (Pulse Amplitude Modulation 4-Level) technology to achieve an aggregate throughput of 200Gbps. this transceiver delivers high-bandwidth, energy-efficient performance with short reach. making it the ideal choice for next-generation AI data centers and High-Performance Computing (HPC) clusters.Fully compliant with IEEE 802.3bs, QSFP56 MSA, SFF-8665, SFF-8636 and SFF-8679 standards,real-time Digital Optical Monitoring (DOM) supported. 

Full Compatibility List and Supported Devices of Cisco 200G Transceiver
Our 200G QSFP56 SR4 module is rigorously tested and firmware-optimized for seamless integration with:
  1.Cisco Nexus 9000 Series Data Center Switches:

• Nexus 9332D-GX2B (Fixed-configuration 400G switch supporting 200G QSFP56 via backward-compatible QSFP-DD ports)
  
• Nexus 9364C-GX (High-density backbone switch with selective multi-rate operational configurations)
  
• Nexus 9316D-GX (Designed for high-performance spine environments)
   

• Compatible with specific line cards featuring multi-rate 200G/400G capabilities (e.g., C9600X-LC-32CD supervisor/line card combinations).

Primary Application Scenarios of 200G QSFP56 Transceiver

The Cisco QSFP-200G-SR4-S is optimized for short-range interconnectivity within modern network spine-and-leaf fabrics:

• Top-of-Rack (ToR) to Spine Uplinks: High-speed connections between high-density access switches and the spine layer within the same or adjacent server racks.

• Enterprise Private Cloud & Core Virtualization: Upgrading multi-mode server access layers to 200G pipelines to support intensive virtualization, massive database replication, and storage area networking (SAN).

• High-Frequency Trading & Private Data Clusters: Low-latency interconnectivity for localized data clusters requiring heavy eastward-westward traffic throughput.

Key Product Parameters of 200GBASE-SR4 Transceivers

Connectivity Solutions for 200G Optical Module

Q1: What does the "-S" suffix indicate in Cisco QSFP-200G-SR4-S?A1: The "-S" denotes Cisco's "S-Class" (Smart Class) line of optics. These modules are specifically tailored for enterprise and data center features (such as 100m OM4 reach) and exclude uncommon legacy protocols to offer a more cost-effective solution compared to non-S-class optics.

Q2: Can I insert this 200G SR4 module into a Cisco 400G QSFP-DD port?A2: Yes. Cisco's 400G QSFP-DD ports are backward-compatible. A QSFP56 module can physically and electrically map into the lower-speed lane configurations of a QSFP-DD slot and will run natively at 200G.

Q3: What type of fiber optic patch cord is used for this 200G SR4 transceiver?A3: It uses a Multi-Mode Fiber (MMF) patch cable with an MPO-12 (UPC) connector. the dual-LC fibers can not be used.

Q4: Can I use this 200G SR4 transceiver on a standard 100G QSFP28 switch port?A4: No. The 100G QSFP28  port does not support the 200G QSFP56 module.their pulse modulation ways are different. 100G SR4 module uses 25G NRZ electrical lanes and cannot process the 50G PAM4 signals used by this 200G QSFP56 transceiver.

Q5: Is Forward Error Correction (FEC) required to use this module?A5: Yes. In accordance with the IEEE 802.3bs 200GBASE-SR4 standard, the host equipment must have RS-FEC turned on to manage the native signal margins of PAM4 technology.

Q6: Can this 200G QSFP56 module be split into breakout connections?A6: Yes. Because it features a parallel 4-lane VCSEL optics structure, you can use an MPO-12 to 2x QSFP56 breakout cable or an MPO-12 to 4x SFP56 breakout cable to divide the link into 2x 100G or 4x 50G connections, provided your Cisco switch port supports splitting.

Q7: What is the maximum transmission distance for 200G QSFP56 SR4 module?A7: The module transmit data up to 100 meters (328 feet) when using high-quality OM4 multi-mode fiber, and up to 70 meters (229 feet) when utilizing OM3 fiber.

Q8: Does the QSFP-200G-SR4-S feature Digital Diagnostics Monitoring (DDM)?A8: Yes. It supports  Digital Diagnostic Monitoring allowing real-time tracking of internal temperature, operating voltage, laser bias currents, and transmit/receive power values via the switch OS.

Q9: What happens if I insert a third-party clone of this module into my Cisco switch?A9: Cisco switches utilize advanced firmware validation checks. If a non-genuine or poorly coded module is detected, the switch OS will trigger a flag (e.g., Unsupported Cable) and disable the port to protect signal integrity.

Why Network Engineers Choose HYTOPTODEVICE

HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.

• 100% MSA-compliant modules with Cisco, Huawei,Dell,Juniper, and Arista compatibility
• ISO 9001:2015 certified manufacturing facility in Shenzhen
• Average lead time of 3–5 business days with DHL/FedEx express options
• Dedicated pre-sales engineering support for custom configurations
• Actual hardware,actual switches,actual results.we publish compatibility test video,eliminate compatibility anxiety. you can watch before you buy. 
• We can provide inspection and shipping videos to make you feel as if you are right here with the product.

"We replaced 200 Cisco-branded SFPs with HYTOPTODEVICE equivalents across our spine layer — zero compatibility issues, 40% cost reduction."— Network Architect, Tier-2 ISP, Germany

Quality Certification & Compliance：

 At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final inspection, our processes ensure global compliance and reliability.

We adhere to rigorous standards for our SFP modules and network solutions:

• ISO 9001: Certified quality management and production consistency.

• CE & FCC: Fully compliant for seamless Global Market Access.

• RoHS: Committed to environmental responsibility and hazardous material control.

• Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.

Certified Quality. Global Standards. Guaranteed Performance.

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