{"id":20313,"date":"2026-09-18T06:28:26","date_gmt":"2026-09-18T06:28:26","guid":{"rendered":"https:\/\/www.fibermall.com\/blog\/?p=20313"},"modified":"2026-09-18T06:28:28","modified_gmt":"2026-09-18T06:28:28","slug":"qsfp112-nvidia-ai-clusters-connectx-7-and-bluefield-3","status":"publish","type":"post","link":"https:\/\/www.fibermall.com\/blog\/qsfp112-nvidia.htm","title":{"rendered":"QSFP112 NVIDIA AI Clusters: ConnectX-7 and BlueField-3"},"content":{"rendered":"\n

You cannot directly install a QSFP112 transceiver into an NVIDIA Quantum-2 or Spectrum-4 switch port. These switch platforms use OSFP-based cages, while QSFP112 is designed primarily for NVIDIA adapter-side and DPU-side connectivity.<\/p>\n\n\n\n

This difference often causes confusion when engineers deploy NVIDIA 400G AI networks. A common assumption is that the same 400G optical module can be installed on both ends of the link. However, the physical interfaces are different: NVIDIA adapters and DPUs may use QSFP112 cages, while NVIDIA 400G-class switches use OSFP cages.<\/p>\n\n\n\n

The reason is related to mechanical design, thermal management, and platform architecture. QSFP112 and OSFP provide different physical packages and cooling methods, so they are not interchangeable.<\/p>\n\n\n\n

Once this design principle is understood, NVIDIA QSFP112 deployments become much easier to plan.<\/p>\n\n\n\n

This guide explains where QSFP112 is used, which NVIDIA adapters and DPUs support it, how to select compatible optical modules, and how to correctly deploy 400G and 200G NVIDIA network<\/a> connections.<\/p>\n\n\n\n

If you need a broader introduction to QSFP112 specifications and applications, refer to our complete QSFP112 400G guide.<\/p>\n\n\n\n

\"ConnectX-7<\/figure>\n\n\n\n
\n
\n

Table of Contents<\/p>\nToggle<\/span><\/path><\/svg><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n