As network speeds continue to scale beyond 800G, 1.6T connectivity represents the next practical step in supporting higher bandwidth density and evolving architectures. AddOn's 1.6T OSFP 2xDR4 transceivers and Direct Attach Cables (DACs) are designed to deliver ultra-fast, reliable data transmission for short-reach, high-speed networking environments.
Engineered for 1.6T performance, these solutions offer low insertion loss and strong signal integrity while maintaining compliance with OSFP MSA and IEEE 802.3dj standards. With support for link lengths up to 1.0m and a durable sheath jacket, they provide a standards-based, interoperable option for dense rack and adjacent-rack deployments.
1.6T OSFP 2xDR4 Transceivers

| MSA 1.6T 2xDR4 PAM4 OSFP224-IHS Transceiver (SMF, 1310nm, 500m, 2xMPO-12, DOM, CMIS 5.3) LRO | SKU: OSFP224-1600GB-2XDR4-LRO-AO |
| Mellanox® Compatible 1.6T 2xDR4 PAM4 OSFP224-IHS Transceiver (SMF, 1310nm, 500m, 2xMPO-12, DOM, CMIS 5.3) LRO | SKU: O224-1600GB-2XDR4-LRO-MX-AO |
| MSA and TAA 1.6T 2xDR4 PAM4 OSFP224 Transceiver (SMF, 1310nm, 500m, 2xMPO, DOM, CMIS 5.0) | SKU: OSFP224-1600GB-2XDR4-AO |
| Mellanox® 980-9IAH1-00XM00 Compatible TAA 1.6T 2xDR4 PAM4 OSFP224 Transceiver (SMF, 1310nm, 500m, 2xMPO, DOM, CMIS 5.0) | SKU: 980-9IAH1-00XM00-AO |
Features & Benefits:
- Supports 1.6T PAM4 transmission for next-generation high-speed networking.
- Designed for short-reach 500m single-mode fiber applications.
- Supports 2xDR4 connectivity through OSFP224 form factor options.
- Includes DOM and CMIS support for monitoring and system visibility.
- Built for high-density AI, HPC, and data center networking environments.
1.6T OSFP Direct Attach Cables

| MSA and TAA 1.6T OSFP224 to OSFP224 Direct Attach Cable (Passive Twinax, 0.5m, CMIS All) | SKU: OSFP224-1600GB-PDAC0-5M-AO |
| MSA and TAA 1.6T OSFP224 to OSFP224 Direct Attach Cable (Passive Twinax, 1m, CMIS All) | SKU: OSFP224-1600GB-PDAC1M-AO |
Features & Benefits:
- Supports 1.6T OSFP224 to OSFP224 connectivity for short-reach deployments.
- Available in 0.5m and 1m passive twinax cable options.
- Designed for dense rack and adjacent-rack networking environments.
- CMIS support provides compatibility across high-speed system platforms.
- Offers a standards-based option for high-bandwidth data center interconnects.
