400G OSFP
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- 400Gbps
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400GBASE-DR4 OSFP Flat Top PAM4 1310nm 500m DOM MTP/MPO-12 APC SMF Optical Transceiver Module
OSFP-400G-DR4
In Stock Ready to Ship
US$359.00 -
Hot
- 400Gbps
- OSFP
- 400G SR4
- OM4 50m
400GBASE-SR4 OSFP Flat Top PAM4 850nm 50m DOM MTP/MTP/MPO-12 APC MMF Optical Transceiver Module
OSFP-400G-SR4
In Stock Ready to Ship
US$459.00
400G OSFP Overview
The 400G OSFP category contains two 400G optical transceiver modules for supercomputing and high-performance interconnects across computing and storage infrastructure. Both models use the OSFP form factor with a flat-top thermal structure, PAM4 modulation, DOM support, and an MTP/MPO-12 APC optical connector. The series includes one multimode SR4 transceiver and one single-mode DR4 transceiver, covering transmission distances from 50m to 500m. These modules support connections between ConnectX-7 OSFP adapters and dual-port transceivers installed in 2x400G Ethernet switches.
OSFP-400G-SR4 This 400GBASE-SR4 OSFP transceiver operates at 850nm over multimode fiber and uses an MTP/MPO-12 APC connector for the SR4 optical interface. It supports transmission distances up to 50m and incorporates PAM4 modulation, DOM monitoring, and a flat-top housing. The module supports short-reach 400G links between ConnectX-7 OSFP adapters and dual-port transceivers in 2x400G Ethernet switches within supercomputing, computing, and storage infrastructure.
OSFP-400G-DR4 This 400GBASE-DR4 OSFP transceiver provides 1310nm transmission over single-mode fiber through an MTP/MPO-12 APC connector. It supports optical links up to 500m and integrates PAM4 modulation, DOM monitoring, and a flat-top thermal structure. The module is used for longer-reach 400G interconnections between ConnectX-7 OSFP adapters and dual-port transceivers in 2x400G Ethernet switches across supercomputing, computing, and storage systems.
FAQ
- What is the main optical difference between OSFP-400G-SR4 and OSFP-400G-DR4 when planning 400G links?
OSFP-400G-SR4 uses 850nm multimode transmission for links up to 50m, while OSFP-400G-DR4 uses 1310nm single-mode transmission for links up to 500m. Both use PAM4 modulation and an MTP/MPO-12 APC connector.
- Can OSFP-400G-DR4 support a 500m connection over single-mode fiber?
Yes. The OSFP-400G-DR4 supports 400GBASE-DR4 transmission at 1310nm over single-mode fiber for links up to 500m, using an MTP/MPO-12 APC optical interface.
- Can the same MTP/MPO-12 APC patch cable be used with both OSFP-400G-SR4 and OSFP-400G-DR4?
No. Although both models use an MTP/MPO-12 APC connector, OSFP-400G-SR4 requires multimode fiber, while OSFP-400G-DR4 requires single-mode fiber. The patch cable must match the optical media of the selected module.
- How do OSFP-400G-SR4 and OSFP-400G-DR4 connect to dual-port transceivers installed in 2x400G Ethernet switches?
Each module provides one 400G optical link. One OSFP-400G-SR4 or OSFP-400G-DR4 connects to one independent 400G side of the switch’s dual-port transceiver through a matched MTP/MPO-12 APC fiber cable. Using both 400G sides requires two fiber links.
- Why do OSFP-400G-SR4 and OSFP-400G-DR4 use a flat-top OSFP housing rather than integrated cooling fins?
They use the host cage’s riding heatsink. The flat-top surface transfers heat to the heatsink above a ConnectX-7 OSFP cage, while switch-side dual-port OSFP transceivers commonly use finned-top housings.
- Which operating parameters can DOM report for OSFP-400G-SR4 and OSFP-400G-DR4?
DOM can report module temperature, supply voltage, laser bias current, and per-lane optical transmit and receive power, together with warning and alarm thresholds that the host software can read.
- Can OSFP-400G-SR4 or OSFP-400G-DR4 be installed directly in a QSFP112 port?
No. OSFP-400G-SR4 and OSFP-400G-DR4 require an OSFP host cage. OSFP and QSFP112 use different mechanical interfaces, so these modules cannot be inserted directly into a QSFP112 port.
