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Compatible 400G QSFP112 DR4 Optical Transceiver Module for High-Density Ethernet Switching
Product Highlights
*Optimized for high-density single-mode 400G Ethernet switching
*Supports 400GBASE-DR4 transmission up to 500m over OS2 single-mode fiber
*MPO-12/APC interface with 4×100G PAM4 optical lane architecture
*Ideal for cloud data centers, aggregation networks, and high-capacity switching platforms
*Compatible with major switch vendors including Cisco, Arista, NVIDIA, Huawei, and H3C
*Low power consumption design for efficient network operation
*Fully compliant with IEEE 802.3bs and QSFP112 MSA standards
Generic Compatible 400G QSFP112 DR4 PAM4 Transceiver (SMF, 1310nm, 500m, MPO-12/APC, DOM)
The 400G QSFP112 DR4 optical transceiver is designed for next-generation high-density Ethernet switching platforms requiring reliable single-mode 400G connectivity. Based on the 400GBASE-DR4 standard, the module supports transmission distances up to 500m over OS2 single-mode fiber through an MPO-12/APC interface.
As a QSFP112 optical transceiver, it enables increased port density, scalable bandwidth expansion, and efficient network growth for cloud data centers, aggregation layers, and high-capacity switching environments.
Product Details
Part Number:QSFP112-400G-DR4
Description:QSFP112 DR4 single-mode optical module, 400G, MPO-12/APC, working temperature 0~70℃, 1310nm, 500M, DOM
Compatible with: Cisco, Huawei, H3C, Arista, Juniper, Dell
Data Rate | Module Type | Distance | Wavelength | Interface | Temperature | DOM |
400Gb/s | QSFP112 | 500M | 1310nm | MPO-12/APC | 0~70℃ | Yes |
Specifications
| Form Factor | QSFP112 | Data Rate | 425Gbps (4x106.25Gbps PAM4) |
| Wavelength | 1310nm | Max Distance | 500m (OS2 SMF) |
| Connector | MPO-12/APC | Media | SFM |
| TX Power | -2.9 ~ 4.0dBm | RX Sensitivity | -5.9dBm |
| Power Budget | 3dB | Power Consumption | ≤10W |
| Operating Temp | 0 to 70°C | DDM/DOM | Supported |
| Protocols | QSFP112 MSA, CMIS 5.0, IEEE Std 802.3ck | Warranty | 3 Years |
High-Density Single-Mode Switching
The 400G QSFP112 DR4 optical transceiver provides reliable single-mode 400G Ethernet connectivity for high-density switching environments. Supporting 400GBASE-DR4 transmission up to 500m over OS2 single-mode fiber, this QSFP112 optical transceiver enables scalable bandwidth growth and efficient switch-to-switch communication in modern network infrastructures.


Cloud Data Center Aggregation Networks
Designed for cloud data center aggregation networks, the 400G QSFP112 DR4 optical transceiver supports high-capacity traffic forwarding between aggregation and core switching layers. Built on 400GBASE-DR4 technology, this QSFP112 optical transceiver helps simplify network expansion while maintaining efficient single-mode 400G connectivity.
Scalable 400G Ethernet Expansion
The 400G QSFP112 DR4 optical transceiver enables scalable 400G Ethernet expansion for growing enterprise and cloud networks. With support for 400GBASE-DR4 transmission over OS2 single-mode fiber, the module provides a flexible solution for increasing network capacity without compromising performance or reliability.

Quality Assurance
1. Platform Validation
Verified on major switch platforms including Arista, Cisco, NVIDIA, Huawei, H3C, and Juniper for reliable 400GBASE-DR4 interoperability.
2. Performance Testing
72-hour burn-in testing, temperature cycling (0°C–70°C), optical power verification, and BER validation (BER < 1E-12).
3. PAM4 Signal Integrity Testing
All 4 transmit and 4 receive lanes are individually validated to ensure stable 400GBASE-DR4 signal transmission over single-mode fiber.
4. Interoperability Testing
Validated with QSFP112 switch platforms, cloud data center interconnect environments, and high-density Ethernet networks.
Certifications: CE, FCC, RoHS compliant.
Warranty: 3-year warranty against manufacturing defects with lifetime technical support.
Test Equipment
Platform Validation
Environmental Reliability TestCompatibility & Platform Validation
- Arista 7060X5 / 7800 series
- Cisco Nexus 9000 series
- NVIDIA Spectrum series
- Huawei CloudEngine series
- H3C S12500X series
- Juniper QFX series
- Dell PowerSwitch series

Note: Installing a compatible transceiver does not void your network equipment warranty per major manufacturers' guidelines.
FAQ Section
Q1: What is a 400G QSFP112 DR4 optical transceiver?
A 400G QSFP112 DR4 optical transceiver is a high-speed 400G Ethernet module that uses PAM4 modulation and MPO-12/APC connectivity to support up to 500m transmission over OS2 single-mode fiber. It is widely deployed in cloud data centers and high-density switching environments.
Q2: What fiber is required for a 400GBASE-DR4 QSFP112 optical transceiver?
The 400GBASE-DR4 QSFP112 optical transceiver requires OS2 single-mode fiber and an MPO-12/APC connector. For optimal performance, a Type B polarity MPO trunk cable is recommended.
Q3: What is the transmission distance of QSFP112-400G-DR4?
The QSFP112-400G-DR4 optical transceiver supports transmission distances up to 500 meters over OS2 single-mode fiber while maintaining reliable 400G Ethernet connectivity.
Q4: What devices are compatible with 400G QSFP112 DR4 modules?
400G QSFP112 DR4 modules are commonly compatible with major Ethernet switch platforms from Cisco, Arista, NVIDIA, Huawei, H3C, Juniper, and Dell, depending on the required coding and compatibility profile.
Q5: What is the difference between QSFP112 DR4 and QSFP112 SR4?
QSFP112 DR4 uses single-mode fiber and supports up to 500m transmission, while QSFP112 SR4 uses multimode fiber and typically supports up to 100m over OM4 fiber. DR4 is preferred for longer-reach data center interconnect applications.
Q6: Can a 400G QSFP112 DR4 network be upgraded to 800G in the future?
Yes. Many data center operators deploy 400G QSFP112 DR4 today and use it as part of a future 800G migration strategy. Proper fiber infrastructure planning can simplify future bandwidth upgrades and reduce deployment costs.
Q7: Is the 400G QSFP112 DR4 suitable for AI networking?
Yes. The 400G QSFP112 DR4 optical transceiver provides high-bandwidth, low-latency connectivity for AI clusters, cloud infrastructure, and next-generation data center networks requiring scalable Ethernet interconnects.
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