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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.