What’s the difference between QSFP-DD and OSFP transceivers?

QSFP-DD is backward compatible with QSFP28 and supports up to 400G, while OSFP is a larger form factor optimized for better thermal performance and future 800G scalability.

Do 400G and 800G transceivers use PAM4 modulation?

Yes. Both 400G and 800G transceivers use PAM4 modulation to double the data rate per channel compared to NRZ. This allows for higher throughput in hyperscale networks.

Are LINK-PP 400G and 800G modules compatible with NVIDIA and Infiniband platforms?

Yes. LINK-PP ultra-high-speed transceivers are designed and tested for compatibility with NVIDIA ConnectX, Infiniband networks, and major 400G/800G data center switches.

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200/400/800G Transceiver Modules

NVIDIA/Mellanox MMS4X50-NM Compatible LINK-PP 800G OSFP CWDM IHS/Closed Finned Top 2FR4 1310nm 2km Dual Duplex LC SMF Transceiver Module

Juniper

800G QSFP-DD/OSFP

LO-CW800-2FR4C

Juniper OSFP-2X400G-FR4-P Compatible LINK-PP 800G OSFP CWDM IHS/Closed Finned Top 2FR4 1310nm 2km Dual Duplex LC SMF Transceiver Module

H3C OSFP800-800G-2FR4-WDM1300-DLC Compatible LINK-PP 800G OSFP CWDM IHS/Closed Finned Top 2FR4 1310nm 2km Dual Duplex LC SMF Transceiver Module

H3C

800G QSFP-DD/OSFP

LO-CW800-2FR4C

H3C OSFP800-800G-2FR4-WDM1300-DLC Compatible LINK-PP 800G OSFP CWDM IHS/Closed Finned Top 2FR4 1310nm 2km Dual Duplex LC SMF Transceiver Module

FS OSFP-2FR4-800G Compatible LINK-PP 800G OSFP CWDM IHS/Closed Finned Top 2FR4 1310nm 2km Dual Duplex LC SMF Transceiver Module

800G QSFP-DD/OSFP

LO-CW800-2FR4C

FS OSFP-2FR4-800G Compatible LINK-PP 800G OSFP CWDM IHS/Closed Finned Top 2FR4 1310nm 2km Dual Duplex LC SMF Transceiver Module

Arista

800G QSFP-DD/OSFP

LO-CW800-2FR4C

Arista OSFP-800G-2FR4 Compatible LINK-PP 800G OSFP CWDM IHS/Closed Finned Top 2FR4 1310nm 2km Dual Duplex LC SMF Transceiver Module

Cisco

800G QSFP-DD/OSFP

LO-CW800-2FR4C

Cisco OSFP-2X400G-FR4 Compatible LINK-PP 800G OSFP CWDM IHS/Closed Finned Top 2FR4 1310nm 2km Dual Duplex LC SMF Transceiver Module

LINK-PP

800G QSFP-DD/OSFP

LO-CW800-2FR4C

LINK-PP LO-CW800-2FR4C 800G OSFP CWDM IHS/Closed Finned Top 2FR4 1310nm 2km Dual Duplex LC SMF Transceiver Module

NVIDIA/Mellanox

800G QSFP-DD/OSFP

LO-CW800-2LR4C

NVIDIA/Mellanox OSFP800-2LR4-A2 Compatible LINK-PP 800G 2LR4 OSFP CWDM IHS/Closed Finned Top 1310nm 10km Dual Duplex LC SMF Transceiver Module

Juniper

800G QSFP-DD/OSFP

LO-CW800-2LR4C

Juniper OSFP-2X400G-LR4-P Compatible LINK-PP 800G 2LR4 OSFP CWDM IHS/Closed Finned Top 1310nm 10km Dual Duplex LC SMF Transceiver Module

FS OSFP800-2LR4-A2 Compatible LINK-PP 800G 2LR4 OSFP CWDM IHS/Closed Finned Top 1310nm 10km Dual Duplex LC SMF Transceiver Module

800G QSFP-DD/OSFP

LO-CW800-2LR4C

FS OSFP800-2LR4-A2 Compatible LINK-PP 800G 2LR4 OSFP CWDM IHS/Closed Finned Top 1310nm 10km Dual Duplex LC SMF Transceiver Module

Arista

800G QSFP-DD/OSFP

LO-CW800-2LR4C

Arista OSFP-800G-2LR4 Compatible LINK-PP 800G 2LR4 OSFP CWDM IHS/Closed Finned Top 1310nm 10km Dual Duplex LC SMF Transceiver Module

Cisco

800G QSFP-DD/OSFP

LO-CW800-2LR4C

Cisco OSFP800-2LR4-A2 Compatible LINK-PP 800G 2LR4 OSFP CWDM IHS/Closed Finned Top 1310nm 10km Dual Duplex LC SMF Transceiver Module

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Ultra-High-Speed Transceivers for AI, Cloud, and Hyperscale Networks

LINK-PP's 200G, 400G, and 800G optical transceivers are designed for cutting-edge data center interconnects, AI/ML clusters, and hyperscale environments where ultra-high throughput and energy efficiency are critical. Available in QSFP-DD, OSFP, and QSFP112 form factors, our solutions support PAM4 modulation, forward error correction (FEC), and link distances up to 10km.

Products include 400G QSFP-DD DR4, 400G OSFP SR8, 800G OSFP 2xFR4, and breakout support for 4x100G or 8x50G topologies. These modules are fully compliant with IEEE 802.3bs/cd and OIF standards, ensuring compatibility with NVIDIA, Arista, Cisco, and other 800G-ready switching platforms.

Whether enabling spine-leaf architectures, AI fabric, or optical transport layers, LINK-PP's 200G/400G/800G modules deliver exceptional signal integrity, power efficiency, and scalability to meet future network demands.

📘Frequently Asked Questions about 200G / 400G / 800G Optical Modules

Q: What's the difference between QSFP-DD and OSFP transceivers?
A: QSFP-DD is backward compatible with QSFP28 and supports up to 400G, while OSFP is a larger form factor optimized for better thermal performance and future 800G scalability.
Q: Do 400G and 800G transceivers use PAM4 modulation?
A: Yes. Both 400G and 800G transceivers use PAM4 modulation to double the data rate per channel compared to NRZ. This allows for higher throughput in hyperscale networks.
Q: Are LINK-PP 400G and 800G modules compatible with NVIDIA and Infiniband platforms?
A: Yes. LINK-PP ultra-high-speed transceivers are designed and tested for compatibility with NVIDIA ConnectX, Infiniband networks, and major 400G/800G data center switches.