NVIDIA Mellanox C-DQ8FNM010 400GbE QSFP-DD to QSFP-DD Active Optical Cable, 10m OM3: This is a 10-meter Active Optical Cable (AOC) with QSFP-DD connectors on both ends for 400Gb/s Ethernet point-to-point links (NVIDIA P/N 980-9I08P-00W010). The cable uses 8 lanes of 50Gb/s PAM4 over OM3 multi-mode fiber. This is a fixed-length integrated assembly, not a transceiver with detachable MPO patch cord and not a passive copper DAC. This is a refurbished unit.
Engineering Context
The C-DQ8FNM010 implements 400GBASE-SR8 signaling per IEEE 802.3cd using 8x50Gb/s PAM4 lanes. At 10 meters, it covers in-rack and adjacent-rack 400GbE connections that exceed practical passive copper reach. The factory-terminated AOC eliminates fiber-end-face contamination at installation time and reduces total cabling weight versus copper bundles. EMI immunity is complete, simplifying routing near power distribution.
Deployment & Use Cases
Spine-leaf 400GbE Ethernet fabrics. AI and HPC GPU compute clusters needing high-bandwidth, low-latency uplinks to storage and aggregation. Hyperscale Top-of-Rack to End-of-Row Spectrum switch interconnects. Cloud and SaaS data centers requiring 50Gb/s PAM4 lane structure end-to-end.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: C-DQ8FNM010
NVIDIA P/N: 980-9I08P-00W010
Form Factor: QSFP-DD to QSFP-DD (Point-to-Point)
Data Rate: 400GbE (8x50Gb/s PAM4)
Length: 10m
Fiber Type: OM3 Multi-Mode
Standard: IEEE 802.3cd 400GBASE-SR8
Cable Type: Active Optical Cable (AOC)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Spectrum-3 (SN4000) and Spectrum-4 (SN5000) switches, and ConnectX-6/7 adapters configured for 400GbE QSFP-DD. Both endpoints must negotiate 8x50G PAM4; the cable will not interoperate with 200GbE QSFP56 ports without a breakout assembly. Fixed 10m length and direct point-to-point — does not support 2x200G or 8x50G breakout. Not compatible with InfiniBand HDR/NDR fabrics. QSFP-DD form factor only; will not fit QSFP56 or QSFP28 cages.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS validates each AOC for optical power, lane integrity, and connector cleanliness before shipment. Visit tes-itsolutions.com for global shipping with 1–3 day handling and expert consultation on 400GbE fabric cabling.