• HYTOPTODEVICE HPE Extreme 400G-LR4P-QSFPDD10KM  compatible 400G QSFP-DD PLR4 PAM4 1310nm 10km MPO OS2 fiber bulk wholesale
  • Low power high density 400G PLR4 transceiver for Extreme data center bulk deployment
  • Extreme compatible Plug and play zero-warning 400G QSFP-DD PLR4 for wholesale clients
  • hytoptodevice qsfp-dd 400g optical transceiver module 1310NM 10km PLR4 MPO SMF
  • HYTOPTODEVICE HPE Extreme 400G-LR4P-QSFPDD10KM  compatible 400G QSFP-DD PLR4 PAM4 1310nm 10km MPO OS2 fiber bulk wholesale
  • Low power high density 400G PLR4 transceiver for Extreme data center bulk deployment
  • Extreme compatible Plug and play zero-warning 400G QSFP-DD PLR4 for wholesale clients
  • hytoptodevice qsfp-dd 400g optical transceiver module 1310NM 10km PLR4 MPO SMF

Extreme 400G-LR4P-QSFPDD10KM Compatible 400G QSFP-DD PLR4 Optical Transceiver Module | PAM4 1310nm 10km Bulk Factory Wholesale | HYTOPTODEVICE

HYTOPTODEVICE Extreme 400G-LR4P-QSFPDD10KM replacement 400G QSFP-DD PLR4 single-mode optic, 4×100G PAM4 lanes, 1310nm wavelength, 10km OS2 MPO-12 APC fiber. Pre-programmed for ExtremeXOS zero-alarm deployment, built-in RS-FEC and DDM monitoring. Ideal for bulk wholesale, 400G trunking and 400G-to-4×100G breakout on Extreme leaf-spine fabrics. Support private label, custom EEPROM Programming for global importers, distributors, system integrators and procurement managers.
NO. Brand  Compatible P/N Remarks
1 Cisco QDD-4X100G-LR-S
2 Arista   QDD-400G-PLR4
3 Dell  400G-Q56-DD-LDR4
4 HPE Aruba S3N94A
5 Juniper QDD-4X100G-LR 
6 Extreme  400G-LR4P-QSFPDD10KM 
7 H3C  400GBASE-PLR4 
Description

Extreme 400G-LR4P-QSFPDD10KM Compatible 400G QSFP-DD PLR4 Transceiver | PAM4 1310nm 10km MPO OS2 SMF | HYTOPTODEVICE


Product Overview

HYTOPTODEVICE 400G QSFP-DD PLR4 serves as a direct drop-in replacement for Extreme 400G-LR4P-QSFPDD10KM. It is fully tuned for ExtremeXOS powered switching environments.
This PAM4 parallel single-mode transceiver supports 10km transmission at 1310 over standard OS2 single-mode ribbon fiber. It uses four independent 100G optical lanes and MPO-12 APC interface. No CWDM multiplexing is required.
Every unit comes with custom Extreme-matched EEPROM coding. It enables plug-and-play operation without unsupported transceiver alerts. Integrated hardware RS-FEC and real-time DDM simplify daily network maintenance. This optic is widely supplied for bulk wholesale projects, 400G core trunking, 4×100G breakout and staged 100G to 400G upgrades.


Key Technical Specifications


Extreme Compatible     400G-LR4P-QSFPDD10KM    Vendor Name HYTOPTODEVICE
Form Factor QSFP-DD Max Data Rate 425Gbps
Wavelength 1310nm Max Distance 10km
Modulation Format PAM4 Host Required FEC
Connector MPO-12/APC Voltage Supply 3.3V
Cable Type SMF DDM Support Yes
Transmitter Type  EML Receiver Type PIN
TX Power -1.4~+4.5dBm Receiver Sensitivity < -9.1dBm
Operation Temperature 0 to 70°C (32 to 158°F) Maximum Power < 12W
Protocols QSFP-DD MSA HW Rev 5.1, QSFP-DD, CMIS Rev 5.0,  Application 400G Ethernet, Data Center Interconnect, Infiniband Interconnects
IEEE 802.3cu, IEEE 802.3bs

Usage Guidelines & Best Practices

• Fiber Rule: Only MPO-12 Type-B APC OS2 single ribbon fiber is allowed; multimode/UPC cables cannot support 10km reach.

• Lane Polarity: Confirm MPO fiber sequence before powering ports to avoid severe four-lane power imbalance.

• Distance Limit: Stable 10km performance only guaranteed within MSA rated optical budget.

• Maintenance Tip: Clean MPO APC end faces quarterly to reduce long-distance signal attenuation.

• Operating Env: Standard model 0°C–70°C indoor campus; industrial -40~85°C version available on request.


Full Compatibility List & Supported Network Hardware

1. Supported Hardware & Firmware

HYTOPTODEVICE 400G PLR4 compatible modules match original mechanical size, optical parameters and register settings. Custom ExtremeXOS EEPROM removes third-party transceiver warnings and port lock risks. Every batch runs real Extreme hardware testing to avoid lane imbalance, signal skew and unstable links over 10km fiber.

Validated Extreme Switch Platforms:
• Extreme X690 Aggregation Switches
• Extreme V400 Edge Switches
• Extreme SLX 9850 Core Leaf/Spine Switches
• Extreme QSFP-DD Equipped Rack Servers and SmartNIC Adapters

2. Multi-Brand Cross Compatibility

This 400G PLR4 follows open QSFP-DD MSA standards. It operates reliably on Juniper, Cisco, Aruba, Dell, Huawei, H3C and NVIDIA/Mellanox equipment. It fits multi-vendor hybrid fabrics, cross-pod interconnections and structured cabling upgrade projects.

3. Free Value-Added Services

HYTOPTODEVICE offers competitive bulk pricing for resellers, system integrators and data center contractors. We provide free Extreme-compatible EEPROM reprogramming for all bulk orders.
Available options include private label printing, custom packaging and deployment consulting. All modules pass optical calibration, temperature cycling and 72-hour full-traffic burn-in. Large-volume orders enjoy tiered discounts to reduce project CAPEX.

Primary Application Scenarios

• 10km cross-building backbone trunking for Extreme leaf-spine data center fabrics
• Phased 100G to 400G network upgrades with mixed-speed infrastructure
• 400G to 4×100G breakout port expansion for Extreme TOR and core switches
• Enterprise MPO structured cabling long-distance transmission
• Wholesale supply for system integrators and global network resellers
• Multi-vendor hybrid data center 400G parallel single-mode interconnections

Connectivity Solutions(Applications)

1. 400G to 400G for Switch-Switch Interconnection
Deploy solid 400G trunk links between Extreme core and aggregation switches. The four-lane PLR4 design preserves clean signals across full 10km OS2 fiber. It supports heavy east-west data traffic and simplifies high-density MPO ribbon cabling.

400G PLR4 QSFP-DD for 400G to 400G switch-to-switch interconnection

2.400G to 4x 100G for Switch-Switch

This Extreme compatible 400G QSFP-DD PLR4 supports native breakout mode. It splits one 400G QSFP-DD port into four independent 100G channels. It connects new 400G Juniper hardware with existing 100G switches and NICs, improving port ROI during network upgrades.

400G QSFP-DD PLR4 supporting 400G to 4x100G switch breakout links

3.400G Structured Cabling Deployment

The 1310nm parallel design integrates with standard enterprise MPO cabling systems. It works with centralized fiber frames and supports multi-floor, multi-building scaling. Unified optical specs lower ongoing maintenance and leave room for future 800G migration.

HYTOPTODEVICE 400G PLR4 for enterprise campus MPO structured cabling layout


The Core Feature 

1.Flexible Dual-Mode Operation for Staged Upgrades

This Extreme 400G-LR4P-QSFPDD10KM PLR4 runs in two modes: full 400G or 4×100G breakout. Operators can upgrade section by section without full hardware refresh. It connects new 400G equipment and legacy 100G infrastructure, cutting capital spend and downtime.

Upgrade your network one site at a time with HYTOPTODEVICE 400G PLR4 compatible  module



2.
Verified Host Interoperability

All HYTOPTODEVICE 400G PLR4 modules are tested on Extreme and other major switch platforms. Preloaded EEPROM prevents compatibility errors and unauthorized transceiver logs. Multi-firmware testing delivers stable plug-and-play performance for wholesale clients.
HYTOPTODEVICE 400G PLR4 tested in host devices for proven interoperability

3.Rigorous Testing, Uncompromising Reliability

Every batch undergoes 10km fiber simulation, thermal cycling and 72-hour full-traffic aging. Precision four-lane power calibration reduces imbalance on long MPO cables. Built-in DDM enables remote diagnostics, supporting stable backbone operation for data center and campus networks.

Full factory calibration & 72h aging test for production-grade PLR4 QSFP-DD



FAQ

Q1: Can QSFP-DD 400G transceivers work on older QSFP28 generation switch hardware?
A: HYTOPTO reminds users there is no forward compatibility for QSFP-DD modules on QSFP28 ports. Only reverse pairing is available where QSFP-DD switches accept QSFP28 optics. QSFP28 ports lack a second row of electrical pins required for 400G PAM4 signals, so our Extreme PLR4 cannot establish valid links on QSFP28 devices.

Q2: Does the 400GBASE-PLR4 optical solution belong to official IEEE industry standards?
A: HYTOPTO’s 400G PLR4 fully complies with formal IEEE specifications. The 400GBASE-PLR4 interface is defined under IEEE 802.3cu, covering 1310nm parallel single-mode 10km transmission. It also aligns with QSFP-DD and 100G Lambda MSA rules to guarantee cross-brand interoperability.

Q3: Will 400G PLR4 and XDR4 optical modules achieve stable direct fiber interconnection?
A: HYTOPTO technical testing shows PLR4 and XDR4 cannot communicate reliably end-to-end. PLR4 features loose optical budget for 10km long haul while XDR4 uses tight sensitivity limits for 2km short reach. Mismatched loss parameters create excessive bit errors and total link outages.

Q4: What laser component does HYTOPTO adopt inside this Extreme-compatible 10km 400G PLR4 module?
A: All HYTOPTO Extreme 400G PLR4 transceivers integrate high-quality 1310nm EML electro-absorption modulated lasers. This laser type outputs low-noise PAM4 signals and meets all IEEE long-reach optical benchmarks to deliver error-free 10km single-mode transmission performance.

Q5: Do I need optical signal attenuators for sub-1km lab testing with HYTOPTO 400G PLR4 optics?
A: HYTOPTO engineering team strongly recommends using attenuators for short-distance testing under 1km. Ultra-short fiber creates almost zero attenuation, and over-power incoming light saturates receiver chips, causing signal distortion, random error codes and unstable port flickering during lab validation.

Q6: Which eight fiber strands inside a 12-core MPO cable get activated for HYTOPTO 400G PLR4 signal transfer?
A: HYTOPTO 400G PLR4 follows global parallel optic pinout standards and only uses the middle 8 fibers (strand 3 to strand 10) of a standard 12-core MPO-12 APC ribbon. The outermost four fiber cores remain unused and reserved for future expansion.

Q7: What breakout cable type pairs with HYTOPTO 400G PLR4 to connect legacy 100G network ports?
A: Users must deploy OS2 single-mode MPO-12 APC to four LC duplex breakout cords with Type-B polarity. This specific cable splits the 4-lane parallel 400G signal into four independent 100G-LR channels for smooth docking with older 100G Extreme switches and NICs.

Q8: How multiple patch panel jumpers influence the effective 10km transmission distance of HYTOPTO PLR4 links?
A: Every patch panel connector joint and fiber splice adds small insertion loss that consumes the module’s optical power budget. Complex multi-junction cabling setups reduce the usable stable range from rated 10km down to only 6–8 kilometers for HYTOPTO 400G PLR4 transceivers.

Q9: What operational steps prevent thermal throttling and permanent damage of HYTOPTO 400G PLR4 in dense switch racks?
A: Maintain unblocked front-to-back airflow inside cabinets and keep HYTOPTO module heat sinks free of dust. Keep ambient temperature between 0°C–70°C and activate automatic fan speed control. Avoid fully populating switch slots without reserved thermal margin to stop overheating-induced throttling.

Q10: What functional differences exist between Type 1 and Type 2 heat sinks fitted on HYTOPTO QSFP-DD PLR4 modules?
A: Type 1 standard-height heat sinks suit medium-density Extreme switch deployments. Type 2 slim low-profile heat sinks are designed for ultra-high-density line card chassis. Both fit HYTOPTO 400G PLR4 transceivers, and Type 2 improves cross-module airflow to lower overall rack temperature.

Q11: Does every HYTOPTO Extreme 400G PLR4 transceiver support full real-time DDM optical monitoring functions?
A: All HYTOPTO bulk 400G PLR4 modules include complete DDM/DOM digital monitoring functionality. Network administrators can remotely view live data including transmit/receive optical power, module temperature, laser bias current and supply voltage for proactive link troubleshooting.

Q12: What is CMIS protocol, and why matching CMIS versions matters for HYTOPTO QSFP-DD 400G transceivers?
A: CMIS is the unified management protocol standard for all QSFP-DD optical modules made by HYTOPTO and other vendors. Different CMIS releases carry distinct register and diagnostic definitions. Version mismatch between HYTOPTO PLR4 and ExtremeXOS switches triggers unrecognized modules, missing monitoring data and port initialization failures.


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.
  • Up to 70% cost savings vs OEM, transparent pricing & flexible bulk rates, supported quality returns
  • 100% real-device compatible with Cisco, Huawei,Dell,Juniper, and Arista
  • ISO 9001:2015 Shenzhen factory, full lineup: 1.25G/10G/25G/40G/100G/200G/400G/800G/1.6T transceivers
  • Ample stock, fast global DHL/FedEx shipping in 3–5 working days
  • Free pre-sales engineering support for custom EEPROM  & private label firmware
  • Real switch test videos available for pre-purchase review; inspection & shipping videos provided per order

“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.




Rigorous Industrial Product Testing

   hytoptodevice check device and equiptment for optical transceiver module

100% 3rd Party Compatible
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  • HYTOPTODEVICE HPE Extreme 400G-LR4P-QSFPDD10KM  compatible 400G QSFP-DD PLR4 PAM4 1310nm 10km MPO OS2 fiber bulk wholesale
  • Low power high density 400G PLR4 transceiver for Extreme data center bulk deployment
  • Extreme compatible Plug and play zero-warning 400G QSFP-DD PLR4 for wholesale clients
  • hytoptodevice qsfp-dd 400g optical transceiver module 1310NM 10km PLR4 MPO SMF

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