| NO. | Brand | Compatible P/N | Transceiver Type |
| 1 | Cisco | QSFP-200G-SR4-S | QSFP56-200G-FR4 |
| 2 | Arista | QSFP-200G-SR4 | QSFP56-200G-LR4 |
| 3 | Dell | Q56-200G-SR4 | QSFP56-200G-ER4 |
| 4 | Huawei | QSFP56-200G-SR4 | |
| 5 | Ruijie Networks | 200G-Q56-SR4-MM850 | |
| 6 | NVIDIA/Mellanox | MMA1T00-VS | |
| 7 | H3C | QSFP56-200G-SR4-MM850 |
NVIDIA/Mellanox Compatible |
MMA1T00-VS |
Vendor Name | HYTOPTODEVICE |
| Form Factor | QSFP56 | Max Data Rate | 200Gbps (4x50Gbps) |
| Wavelength | 850nm
|
Max Distance | 70m on OM3/100m on OM4 |
| Modulation Format | PAM4 | Host Required | FEC |
| Connector | MPO-12(UPC) | Voltage Supply | 3.3V |
| Cable Type | MMF | Receiver Overload | 4dBm |
| Transmitter Type | VCSEL 850nm | Receiver Type | PIN |
| TX Power | -6.5~+4.0dBm | Receiver Sensitivity | < -8.4dBm |
| Operation Temperature | 0 to 70°C (32 to 158°F) | Maximum Power | < 4.5W |
| Protocols | QSFP56 MSA, IEEE 802.3bs | Application | 200G Ethernet, High performance computing, Data Center Interconnect |
Usage Guidelines & Best Practices
Fiber Choice: Only works with OM3 / OM4 multi‑mode MPO‑12 trunk cable; single‑mode fiber cannot support 850nm SR4 transmission and will lead to link failure.
Distance Limit: Max 70m on OM3 MMF, max 100m on OM4 MMF; excessive splices, dirty end‑faces or sharp bends reduce actual working distance.
Cleanliness & Dust: Keep dust caps on whenever unattached. Clean fiber end-faces with a optical cleaning pen before insertion; dust causes over 80% of optical link failures.
Installation Specification: Hot‑plug supported; keep MPO connector end‑faces clean, observe minimum fiber‑bend radius requirements.
Operating Environment: Commercial temperature range 0°C‑70°C; maintain cabinet airflow to avoid module overheating.
For detailed operation instructions, please refer to the User Guide.
This module adopts Cisco‑specific EEPROM, supporting zero‑alarm plug‑and‑play with official firmware. All products are strictly temperature burn‑in tested before shipment, fully compatible with the below Cisco hardware models:
Cisco Nexus Data Center Switches: Nexus 9300‑FX3 Series, Nexus 9364E Series, Nexus 9200 Series
Cisco UCS Series: UCS 5108 blade chassis with QSFP56 capable I/O modules
Universal Compatibility: All Cisco devices with standard QSFP56 ports supporting 200GBASE‑SR4 protocol. Breakout functions rely on switch firmware support.
Built on universal MSA open standards, this QSFP56 transceiver is interoperable with mainstream network brands including Arista, Juniper, H3C, Huawei and Fortinet, adapting to mixed‑vendor leaf‑spine network upgrade and expansion scenarios.
• Leaf‑spine fabric deployments for modern AI‑ready data‑center architectures
• High‑density rack‑to‑rack trunk interconnections
• 200G high‑speed server and storage uplink connections
• 200G to 2×100G / 4×50G breakout architecture (host‑firmware dependent)
• Cost‑effective Arista data‑center network hardware upgrade projects
• Inventory supply for global distributors and system integrators for data‑center tender projects
Q1: Will upgrading to 200G require us to buy entirely new patch cables or cleaning tools?
A: No, existing OM3/OM4 MPO-12 patch cords and standard fiber cleaning kits are compatible. HYTOPTODEVICE QSFP56 200G SR4 transceivers adopt standard MPO-12/UPC interface, so you can reuse most of your current cable assets and maintenance supplies to cut upgrade expense.
Q2: Will third-party QSFP56 200G SR4 transceivers throw errors or trigger warning messages in our Cisco/Arista/Juniper switches?
A: It depends on switch vendor lock rules. Our HYTOPTODEVICE 200G SR4 modules support custom EEPROM coding to match required vendor signatures, minimizing warning alarms on major platforms; we advise buyers to confirm switch OS restrictions before bulk ordering.
Q3: Will we experience link drops due to FEC configuration mismatches between different switch vendors and the optics?
A: Yes, mismatched FEC settings can trigger intermittent link flapping. HYTOPTODEVICE supplies clear FEC configuration guidelines for cross-vendor deployments, and our pre-tested QSFP56 200G SR4 optics work reliably once host-side PAM4 FEC is enabled uniformly across the fabric.
Q4: What is the maximum reach of QSFP56 200G SR4, and will it work on our older OM3 cabling?
A: Maximum reach is 70m over OM3 multimode fiber and 100m over OM4 multimode fiber. This HYTOPTODEVICE QSFP56 200G SR4 transceiver supports legacy OM3 cabling perfectly, helping you reuse existing structured cabling infrastructure.
Q5: Will deploying high-density 200G optics cause thermal bottlenecks in our top-of-rack (ToR) switches?
A: Not if following standard thermal design rules. This HYTOPTODEVICE QSFP56 200G SR4 module features low power consumption below 5W; high-density deployments only require proper airflow management inside ToR racks to avoid thermal throttling.
Q6: Does the encoding and FEC processing on 200G SR4 add noticeable latency to our high-frequency trading or HPC workloads?
A: No, the latency overhead from PAM4 encoding and RS-FEC is minimal, typically sub-microsecond. HYTOPTODEVICE validated QSFP56 200G SR4 optics are suitable for HPC and low-latency AI workloads where consistent forwarding performance is critical.
Q7: How sensitive are the multi-mode fiber arrays inside the SR4 transceiver to dust particles?
A: The internal VCSEL and receiver arrays are sensitive to contamination. Dust on the MPO end-face increases insertion loss and causes unstable links. HYTOPTODEVICE recommends routine connector cleaning, and all our modules ship with dust caps for protection before installation.
Q8: What happens if we receive a batch of transceivers where several units are Dead on Arrival (DOA)?
A: HYTOPTODEVICE supports direct DOA replacement for qualified faulty units. Every batch goes through full optical and electrical aging testing before shipment, and our wholesale buyers get dedicated after-sales support to resolve DOA issues quickly.
Q9: Will buying optics from different production batches cause performance inconsistencies across our fabric?
A: No, performance consistency is maintained across batches. HYTOPTODEVICE enforces unified optical specifications and standardized test criteria on all QSFP56 200G SR4 production runs to keep link performance uniform across your leaf-spine fabric.
Q10: If a link goes down, will the optical supplier be able to help troubleshoot, or will they just blame the switch vendor?
A: HYTOPTODEVICE provides end-to-end technical troubleshooting support instead of simple attribution. Our engineering team checks DOM logs, optical parameters and interoperability conditions together with your team to isolate issues for bulk procurement customers.
Q11: Can we plug a 200G SR4 optic into a port configured for lower speeds during a phased migration?
A: No, 200GBASE-SR4 does not support auto-negotiation down to lower speeds. This HYTOPTODEVICE QSFP56 200G SR4 transceiver only operates at 200G speed, so phased migration needs dedicated port speed planning.
Q12: Can we trust the real-time optical power and temperature readings reported by the transceiver's DOM telemetry?
A: Yes, DOM telemetry data is reliable for daily monitoring. Every HYTOPTODEVICE QSFP56 200G SR4 module is factory calibrated, and the CMIS DDM outputs deliver accurate real-time metrics for continuous link health monitoring.
Q13: Do our network technicians need specialized training to handle MPO-based multi-mode optics properly?
A: Basic fiber handling training is recommended, no advanced certification required. HYTOPTODEVICE provides MPO polarity guidance and operation notes with shipments to help your technicians safely deploy these QSFP56 200G SR4 modules.
Q14: How easily can these modules be damaged by ESD during routine data center maintenance?
A: QSFP56 transceivers are ESD-sensitive electronic components. Static discharge can damage VCSEL chips. HYTOPTODEVICE ships all modules in anti-static packaging and reminds maintenance teams to wear ESD wrist straps during handling.
Q15: How do these optics align with our corporate ESG (Environmental, Social, and Governance) targets?
A: These QSFP56 200G SR4 modules meet RoHS restricted substance compliance. HYTOPTODEVICE uses energy-efficient production processes and low-power optical design to help wholesale customers meet green IT and ESG data center requirements.
Packaging & Custom OEM Solutions
ESD Protection & Fast Shipping: Every module is sealed in an ESD-safe bag and ready for same-day dispatch from stock.
Custom OEM & Branding: We provide logo printing, private labeling, and custom packaging to help distributors and integrators build their brand—no factory investment required.
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.
“Phenomenal performance. We deployed 200 HYTOPTODEVICE SFP modules to replace Cisco OEMs in our backbone network. Result? Zero compatibility issues and a 60% reduction in costs. Highly recommended for mission-critical networks."— Senior Network Engineer, Regional Telecom, Australia
Quality Certification & Compliance
At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final visual inspection, from IQC、IPQC、FQC to OQC, 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.
