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QDD-400G-DR4-S
400G QSFP-DD Transceiver, 400GBASE-DR4, MPO-12,500m parallel
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QDD-400G-DR4-S is a high-performance QSFP-DD transceiver engineered to deliver 400G data throughput over optical links. This module features LC duplex connectors and is optimized for short-range transmission over multi-mode fiber, supporting both Ethernet and Fibre Channel protocols in demanding data center, enterprise network, and telecom applications.
The transceiver’s compact form factor and standard physical dimensions facilitate seamless integration into high-density systems while ensuring efficient power management and operational reliability. Designed to meet the rigorous demands of modern networking environments, QDD-400G-DR4-S offers consistent performance and interoperability with leading industry platforms.
QDD-400G-DR4-S price is $2,643.00, a 47.3% saving from the Cisco list price of $5,012.00. QDD-400G-DR4-S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QDD-400G-DR4-S for additional pricing. Browse the full Cisco 400G Optical Modules series or explore all Cisco products.
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| QDD-400G-DR4-S |  QDD-2X100-SR4-S |  QDD-400-CU2M |  QDD-400G-FR4-S |  QDD-400G-LR8-S | |
|---|---|---|---|---|---|
| Compatibility | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista |
| Connector Type | LC | LC | Twinaxial | LC | LC |
| Data Rate | 400G | 2x100G | 400G | 400G | 400G |
| Depth | 2.20 inches | N/A | N/A | 3.94 inches | 1.68 inches |
| Fiber Type | Multi-mode | Multi-mode | N/A | Single-mode | Single-mode |
| Form Factor | QSFP-DD | QSFP28 | QSFP-DD | QSFP-DD | QSFP-DD |
| Height | 0.44 inches | N/A | N/A | 0.55 inches | 0.80 inches |
| Input Voltage | 3.3V | 3.3V | N/A | 3.3V | 3.3V |
| Max Distance | 500 meters | 100 meters (OM4) | 2 meters | 2 km | 10 km |
| Network Interface | Ethernet | Fiber | Ethernet | Fiber | Ethernet |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | N/A | 6.5W | N/A | 15W | 20 W |
| Product Name | QDD-400G-DR4-S | QDD-2X100-SR4-S | QDD-400-CU2M | QDD-400G-FR4-S | QDD-400G-LR8-S |
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet, Fibre Channel | Ethernet | Ethernet | Ethernet | Ethernet |
| Transmission Distance | Short-Range | Short-Range | Short-Range | Long-Range | Long-Range |
| Wavelength | N/A | 850 nm | N/A | 1310 nm | 1310 nm |
| Weight | 0.12 lbs | N/A | N/A | 0.08 lbs | 0.25 lbs |
| Width | 0.85 inches | N/A | N/A | 0.71 inches | 0.66 inches |
Perfect for 500m parallel fiber runs. Achieved stable 400G throughput without packet drops.
Strong DR4 performance with consistent signal levels. Ideal for high-density data center environments.
Easy integration and reliable MPO connectivity. Maintains excellent stability under stress.
Efficient 400G deployment across short distance SMF. Clean performance metrics.
Stable optical output and seamless compatibility. Great for spine-leaf architectures.
Reliable parallel optics with consistent bandwidth. Met all performance expectations.
Delivered dependable 500m reach with solid throughput. A strong addition to our 400G infrastructure.
The QDD-400G-DR4-S is a 400G QSFP-DD transceiver module compliant with IEEE 802.3bs, supporting 400GBASE-DR4 over parallel single-mode fiber with an MPO-12 interface for up to 500 m reach.
This transceiver operates over parallel single-mode fiber (SMF) using MPO-12 connectors, optimized for data center interconnects up to 500 m without dispersion compensation.
The module supports a maximum reach of 500 meters on parallel single-mode fiber (SMF) at 1310 nm using 12-fiber MPO connectors.
The transceiver is ideal for high-density data center aggregation, core switching, HPC interconnects, and telecom backbone links requiring 400 Gb/s bandwidth over 500 m.
Yes. It is compliant with the QSFP-DD MSA (Multi-Source Agreement) and IEEE 802.3bs 400GBASE-DR4 standard for interoperability across vendors.
It employs four parallel lanes at 1310 nm (LAN-WDM) for bidirectional 400 Gb/s transmission over single-mode fiber.
Power consumption is typically under 11 Watts, meeting stringent data center power-efficiency requirements.
Yes. It features Digital Optical Monitoring (DOM) for real-time readout of parameters such as temperature, supply voltage, bias current, and optical power.
The module operates reliably from 0 °C to +70 °C (32 °F to 158 °F) ambient temperature for standard commercial environments.
Yes. It is fully hot-swappable, allowing installation or removal without powering down the host equipment.
It complies with IEEE 802.3bs 400GBASE-DR4 and QSFP-DD MSA specifications, ensuring interoperability in 400 GbE environments.
Yes. It supports MPO-12 to 4×LC breakout cables for seamless migration to 4×100 Gb/s links within QSFP-DD ports.
Align and insert the module into a compatible QSFP-DD port until the latch clicks, then connect the MPO-12 fiber cable. No additional drivers are required.
The transceiver is identified as SKU: QDD-400G-DR4-S and part number QDD-400G-DR4-S for procurement and inventory tracking.
Standard warranty is one year, covering manufacturing defects. Extended support options are available through your vendor or OEM partner.
QSFP-DD doubles lane count versus QSFP28, supporting 8 lanes of 50 Gbps for 400 Gb/s aggregate throughput while maintaining QSFP form-factor compatibility.
400GBASE-DR4 delivers high-speed 400 Gb/s links over cost-effective parallel SMF, reduces per-bit cost, and simplifies data center lane architecture.
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