NVIDIA Mellanox LinkX Cable Accessories
NVIDIA® LinkX® Optics QSA® is a quad small form-factor pluggable (QSFP)-to-small form-factor pluggable (SFP) port adapter that enables a single-channel SFP device to be inserted into a larger four- or eight-channel QSFP/QSFP double-density (QFSP-DD) port and pass through only the single-channel data. Amazingly, the QSA can link a slower one-channel, 1GbEBase-T transceiver to a high-speed eight-channel, 400GbE QSFP-DD port.
Passive optical fiber splitter cables are available for splitting four-channel, 100G or 200G SR4 multi-mode transceivers into individual channels. Splitters have an MPO-12 on one end and four duplex LC optical connectors on the other end.
Device-Wide Support
Available in 1G/10G, 25G non-return-to-zero (NRZ), and 50G-4-level pulse-amplitude-modulation (PAM4) versions, NVIDIA QSA Ethernet adapters support a wide array of devices, from 0.5m direct-attach copper cables (DACs) and active optical cables (AOCs) to 10km SFP56 long-range (LR) transceivers, including 1GBase-T converters. They’re not available for InfiniBand.
QSAs can be used in all NVIDIA Mellanox Spectrum® Ethernet switches, NVIDIA Mellanox ConnectX® network adapter cards, and data processing units (DPUs). Each version is backwards compatible, and the 50G-PAM4 version also supports 1G/10G/25GNRZ signaling.
The QSA is a life saver when linking legacy equipment to new high-speed 200G/400G systems.
High-Speed Interconnects
The latest rapid growth in data center traffic and cloud computing has resulted in tremendous increases in machine-to-machine traffic due to rapid adoption of server virtualization, software-defined networks (SDNs), and in-cloud computing. Now add the massive bandwidth requirements for networking terabytes of data for training Artificial Intelligence (AI) machine learning (ML) GPU-based systems.
This is driving massive demands for high-bandwidth and low-latency networks. High-speed DAC and AOC cables and optical transceiver interconnects are playing a critical role in these modern data center technologies. Learn more with this 38-page e-book packed with details on Ethernet DACs, AOCs, and optical transceivers.
Download The Case Study
Key Features
- Mechanical adapter with erasable programmable read-only memory (EPROM) ID tells the host the pass-through configuration
- Supports SFP+, SFP28, SFP56 DAC, AOCs, transceivers, and BASE-T
- No additional power required (passive, except for EPROM ID)
- Extended temperature ranges of -10C up to 85C for hot server applications
- Open-loop tab enables maximum air flow
- Supports any SFP-based DAC, AOCs, multi-mode or single-mode transceiver
Benefits
- Enables linking slower legacy equipment to new high-speed switches and network adapters
- Near-zero latency, power consumption, and insertion loss
- Simple plug-and-play functionality
- QSA can be used in QSFP+, QSFP28, QSFP56, and QSFP-DD ports
- Designed and patented by NVIDIA
- Fiber splitter cable enables creating SR4/MPO-12 transceiver breakouts to four individual one-channel SFP/LC transceivers
ADAPTER CONFIGURATIONS
| Configuration | Form Factor | Part Number** | Lengths (Meters) | |
| Port/fiber adapters | Passive fiber splitter cables | MPO-12 to 8x LC | MC6709309 | 5, 10, 20, 30, 50 |
| 50Gb/s | QSFP56 | SFP56 | MAM1Q00A-QSA56 | N/A |
| 25Gb/s | QSFP28 | SFP28 | MAM1Q00A-QSA28 | N/A |
| 10Gb/s | QSFP+ | SFP+ | MAM1Q00A-QSA | N/A |
| MPO-to-8x LC splitter fiber cable* | Passive fiber splitter cable | MPO-12/flat polish-to-8x LC optical connectors | MC6709309 | 5, 10, 20, 30, 50 |
* MPO is a multi-mode fiber splitter for use with 40G/100G and 200G SR4 transceivers and will not work with single mode 100G/200G/400G PSM4, DR4, FR4 transceivers and InfiniBand NDR transceivers. Fiber cable supports 1G-NRZ through-50G-PAM4.
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