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QSFP112-FR4-400G is an advanced 400G QSFP112 transceiver designed to operate as a 4 x 100G PAM4 optical module across CWDM wavelengths (1271nm, 1291nm, 1311nm, and 1331nm), delivering up to 2km of data transmission over single-mode fiber (SMF) under standard commercial conditions (0 to +70°C) while ensuring full compliance with the 100G Lambda MSA 400G-FR4 specification and integrating real-time digital diagnostic monitoring.
| NVIDIA/Mellanox Part Number | QSFP112-FR4-400G | Vendor Name | LINK-PP |
| Form Factor | QSFP112 | Max Data Rate | 425Gbps (4x106.25Gbps) |
| Max Cable Distance | 2km | Wavelength | 1271nm, 1291nm, 1311nm, 1331nm |
| Connector | Duplex LC | Media | SMF |
| Transmitter Type |
EML | Receiver Type |
TIA |
| DDM/DOM | Supported | Operating Temperature Range |
0°C to +70°C |
| Protocols | QSFP-112 MSA, CMIS Rev 4.0, IEEE 802.3cu, OIF-CEI-112G-VSR-PAM4 | Warranty | 5 Years |
NVIDIA/Mellanox QSFP112-FR4-400G Compatible LINK-PP module is a highly efficient 400G QSFP112 optical transceiver designed to optimize high-speed data transmission over single-mode fiber. It integrates advanced CWDM technology, a duplex LC interface, and real-time diagnostic capabilities into a compact physical-layer design. Operating within a commercial temperature range, this module provides reliable 2km reach with optimized power efficiency for modern networks.
This module features a 4 CWDM lanes MUX/DEMUX design that combines and separates optical signals efficiently. It maintains a maximum power consumption of 10W, helping operators manage thermal loads in high-density switch chassis. The hot-pluggable QSFP112 form factor ensures seamless installation without disrupting active network operations.
Equipped with a 4 × 106.25 Gbps electrical interface compliant with 400GAUI-4, this module delivers massive throughput for cloud and hyperscale environments. It enables rapid data processing across core network backbones by utilizing 100G PAM4 signaling per lane. This rapid serialization supports intense data center traffic Demands while keeping cabling requirements minimal.
By utilizing Coarse Wavelength Division Multiplexing (CWDM), the transceiver combines four distinct channels onto a single fiber pair. This layout maximizes the data capacity of existing single-mode fiber infrastructure without requiring costly new cable deployment. It represents a practical approach to scaling bandwidth while optimizing overall physical plant assets.
The transceiver operates across four precise grid wavelengths: 1271nm, 1291nm, 1311nm, and 1331nm. Each lane carries a 100G optical signal simultaneously with excellent channel isolation and minimal optical crosstalk. This specific wavelength spacing ensures clean signal integrity over the single-mode fiber.
Adhering to the 100G Lambda MSA 400G-FR4 specification, the module reliably covers spans up to 2km over standard single-mode fiber (SMF). This link budget is ideal for local intra-data center connections and campus network aggregations. It provides the necessary reach to span across large building complexes without requiring intermediate inline amplification.
The industry-standard duplex LC optical connector interface provides a familiar, low-insertion-loss connection point for fiber patching. Its robust mechanical locking latch prevents accidental disconnections and ensures stable optical alignment. This standard connection style simplifies field deployment and matches standard enterprise patch panels.
Integrated Digital Diagnostic Monitoring (DDM) delivers continuous, real-time telemetry on critical operating metrics. Network administrators can remotely track parameters such as transceiver temperature, laser bias current, transmitted optical power, and received optical power. This proactive visibility allows teams to catch link degradation issues before an actual network outage occurs.
NVIDIA/Mellanox QSFP112-FR4-400G Compatible LINK-PP undergoes rigorous operational validation and carries international safety and environmental certifications, including ISO 9001, CE, RoHS, and FCC compliance.
Every transceiver is subjected to comprehensive optical line-rate testing and signal integrity verification to guarantee stable physical-layer performance before shipping.
These regulatory compliance standards confirm that the module meets strict environmental directives and global electrical engineering regulations for safe network deployment.
The module hardware is thoroughly audited across major enterprise switch and router platforms to ensure seamless hardware interoperability and error-free port recognition.
LINK-PP subjects every QSFP112-FR4-400G QSFP112 optical transceiver to stringent hardware validation to verify optical signal integrity and strict physical-layer compliance across diverse operating conditions. Discover the complete validation methodology at the LINK-PP Test Support Center.
Verify precise channel wavelength alignment across the CWDM grid.
Analyze optical signal quality and waveform timing margins directly.
Measure data transmission accuracy at the full 400G line rate.
Confirm stable module operation across commercial environmental thermal ranges.
Secure transit procedures guarantee that every optical module arrives safely. Reliable international shipping methods ensure prompt delivery to your location.
Prevent electrostatic discharge damage using specialized protective component packaging.
Safeguard optical components against mechanical impacts during transit.
Accelerate warehouse fulfillment to minimize lead times for deployment.
Ship modules worldwide through established freight network pathways.
This QSFP112-FR4-400G hot-pluggable 400G module inserts directly into standard QSFP112 ports to establish instant, low-latency links. It is engineered for rapid deployment across high-density leaf-and-spine structures, cloud routing nodes, and enterprise campus aggregations, providing a highly reliable physical-layer connection for intensive data traffic.
LINK-PP offers end-to-end technical support, from pre-sales consultation to post-deployment assistance, ensuring smooth integration and reliable network performance.
Professional guidance to help you select the optimal QSFP112-FR4-400G module for your network design and application needs.
Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.
Comprehensive step-by-step guidance for installation, configuration, and initial setup, ensuring accurate deployment and reliable, stable operation from the start.
Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.
LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.
15-day no-reason return and refund
Free replacement for dead-on-arrival (DOA) or defective items within the initial period
Free repair services for manufacturing defects throughout the warranty period
Warranty exclusions and conditions apply
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: Can this 400G-FR4 module connect directly to a 400G-DR4 transceiver on the opposite end? By J***n on 2026-04-20
A: No, FR4 combines 4 wavelengths over 2 duplex LC fibers, whereas DR4 uses 8 parallel fibers with MPO connectors. By admin on 2026-04-21
Q: We operate a dense data center rack with airflow restricted at the back — what is the maximum operating temperature allowed for this module? By M***r on 2026-02-22
A: The operating temperature is rated from 0°C to 70°C, so your rack cooling should keep internal airflow within that range. By admin on 2026-02-23
Q: We need 400G links between buildings 1.5km apart. Will this optical module cover the distance? By L***n on 2025-12-15
A: Yes, it supports up to 2km transmission over single-mode fiber, so your 1.5km inter-building links will work fine. By admin on 2025-12-16
Q: How much heat does this module generate in a fully loaded 32-port 400G switch card? By I***r on 2025-07-15
A: Maximum power consumption is kept strictly under 10W per module, minimizing overall thermal dissipation across high-density switch faces. By admin on 2025-07-16
Q: Is this 400G QSFP112 transceiver fully compliant with 100G Lambda MSA standards? By K***r on 2025-03-26
A: Yes, it multiplexes four 100G PAM4 optical lanes in full accordance with 100G Lambda MSA specifications. By admin on 2025-03-27
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