SKU: 35969903133

Mellanox DynamiX QSA QSA28 QSFP28 to SFP28 Adapter

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Description

Mellanox DynamiX QSA QSA28 QSFP28 to SFP28 AdapterThe Mellanox DynamiX QSA28 QSFP28 to SFP28 Adapter is a smart, cost efficient solution designed to maximize flexibility in high performance data centers. By bridging a quad lane QSFP28 port with a single lane SFP28 interface, this adapter enables seamless lane conversion without the need for costly new transceivers or expansive cabling changes. Ideal for environments that demand scalable 100 Gb s networking with mixed transceiver ecosystems, the QSA28

The Mellanox DynamiX QSA28 QSFP28 to SFP28 Adapter is a smart, cost-efficient solution designed to maximize flexibility in high-performance data centers. By bridging a quad-lane QSFP28 port with a single-lane SFP28 interface, this adapter enables seamless lane conversion without the need for costly new transceivers or expansive cabling changes. Ideal for environments that demand scalable 100 Gb/s networking with mixed transceiver ecosystems, the QSA28 delivers a smooth, plug-and-play experience that helps you optimize port utilization, simplify deployments, and lower total cost of ownership.

  • Efficient lane conversion — connects a single-lane SFP28 transceiver or SFP28 cable to a quad-lane QSFP28 port, enabling flexible utilization of a high-density 100 Gb/s switch or NIC without replacing your existing SFP28 devices.
  • Broad transceiver compatibility — supports SFP28, SFP+, and standard SFP transceivers and cables, delivering versatile interoperability across multiple vendors and deployments.
  • Cost-effective, space-saving design — avoids the need for replacement of established QSFP28 ports or wholesale port upgrades, delivering a budget-friendly path to higher port density and improved network topology.
  • Plug-and-play simplicity — engineered for straightforward installation with minimal downtime, enabling rapid deployment in data centers, server rooms, and edge locations.
  • Reliable performance for Nx100Gbps networks — designed to work with Nx100Gbps switches and network interfaces, preserving performance while enabling flexible topology and cabling options.

Technical Details of Mellanox DynamiX QSA28 QSFP28 to SFP28 Adapter

  • Product type: QSA28 QSFP28 to SFP28 adapter, DynamiX family
  • Interface on host side: QSFP28 port capable of quad-lane operation
  • Interface on device side: SFP28 (supports SFP28/SFP+/SFP transceivers or cables)
  • Lane mapping: Enables connection from a single-lane SFP28 transceiver or cable to a quad-lane QSFP28 port
  • Target deployment: NexGen Nx100Gbps switches or network interfaces requiring flexible lane utilization
  • Compatibility: Designed for use with Mellanox DynamiX QSA28 configurations and other QSA28-compatible environments
  • Form factor: Compact adapter module suitable for data center racks and dense deployments

How to install Mellanox DynamiX QSA28 QSFP28 to SFP28 Adapter

  • Power down your switch or network device before installation to prevent any potential electrical issues.
  • Insert the QSA28 adapter into the QSFP28 port on the switch or NIC. Ensure the module is seated firmly and clicks into place.
  • Connect the SFP28 side by inserting a compatible SFP28/SFP+/SFP transceiver, or attach an SFP28-aware copper or fiber cable into the SFP28 receptacles provided by the adapter.
  • Check cabling and transceivers to confirm that all components are properly recognized by the system and that there are no crosstalk or alignment issues.
  • Power up and verify the equipment, then validate link status and data throughput through your management interface to ensure the 1x25G path is correctly mapped to the 4x25G QSFP28 lanes.

Frequently asked questions

  • What is the Mellanox DynamiX QSA28 QSFP28 to SFP28 Adapter?

    The QSA28 is a cross-format adapter that enables a single-lane SFP28 transceiver or cable to be connected to a quad-lane QSFP28 port. This provides a cost-efficient way to utilize 100 Gb/s QSFP28 ports by leveraging existing SFP28 devices and cables.

  • Which devices are compatible with the QSA28?

    The adapter is designed for use with Nx100Gbps switches and network interfaces that support QSFP28 ports. It accepts SFP28 transceivers and cables, offering flexibility across multiple vendors and stock of SFP28 components.

  • Do I need any special drivers or software?

    No special drivers are typically required for the QSA28. It is a hardware-level lane-conversion adapter that operates within the standard fabric of the switches and NICs. Always ensure firmware and device drivers on the host are up to date for optimal compatibility.

  • Can I hot-swap the adapter?

    Hot-swapping capabilities depend on your specific switch model and PCIe/NIC configuration. In most standard data-center deployments, it is recommended to power down the chassis or device before removing or installing adapters to avoid unintended interruptions.

  • What are the main benefits of using the QSA28?

    The QSA28 delivers significant benefits, including lower capital expenditure by leveraging existing SFP28 transceivers, higher port density by enabling flexible lane usage, and simplified cable management in a mixed-technology environment. It enables a scalable path to 100 Gb/s networks without ripping out current SFP28 hardware.

Shipping Notes
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SKU: 35969903133

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Linna
Omaha, US
★★★★★ 3
Sour moist meat
Flavor Name: Traditional, Size: 4 Ounce (Pack of 1)
I had a hankering for jerky and found biltong instead. I didn’t know what made it different, but I was willing to try. I was very surprised how moist it was!! It’s better than the jerky here. If I wanted to gnaw on leather then I’d get my belt instead of paying money for dried meat. I liked that it didn’t have sugar. However , the flavor was confusing. It was mostly sour, like too much vinegar. Other reviewers mentioned that too and I must agree. I’m not sure how it’s suppose to taste but this experience makes me hesitate buying any more.
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Reviewed in the United States on October 22, 2020
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Charles W. Ambrose
Los Angeles, US
★★★★★ 5
Great taste
Flavor Name: Traditional, Size: 4 Ounce (Pack of 1)
Great taste, the right size
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Reviewed in the United States on March 25, 2026
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Joseph Ernest
Phoenix, US
★★★★★ 1
Rancid, Nasty, biltong shavings
Flavor Name: Traditional, Size: 4 Ounce (Pack of 1), Flavor Name: Traditional, Size: 4 Ounce (Pack of 1)
This Ayoba Biltong has an OK flavour, but the black pepper is excessive. About 20% of the shavings are rancid, which means that every 5 shaving pinch you put in your mouth is practically guaranteed to have a rancid flake. The rancid flakes are bitter. acrid and foul, and this nastiness completely overpowers the biltong flavour, even the excess black pepper taste. I believe the rancidness comes from the white bits of fat attached to the meat, but who wants to sort and clean these biltong bits? DO NOT BUY!!!! FYI - I grew up in Swaziland and Botswana, and ate pounds and pounds of biltong. I even made Biltong while deep in the Okavango Delta.
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Reviewed in the United States on February 1, 2026
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J. Johnson
Lake Worth, US
★★★★★ 5
Flavorful
Flavor Name: Traditional, Size: 2 Ounce (Pack of 3)
Best jerky ever I love everything about it! Jeff Johnson
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Reviewed in the United States on April 3, 2026
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David A.
Grantham, US
★★★★★ 5
Excellent flavor and texture to this jerky with no sugar makes it my new favorite
Flavor Name: Traditional, Size: 4 Ounce (Pack of 1)
I have recently adopted a low carb, high protein diet combined with weight training, so I'm always looking for new sources of protein. I use protein powder as little as possible, and eat more from natural sources. I have a brand of beef jerky I really like, but traditional beef jerkies have a lot of sugar (10g protein to 6g of sugar). Biltong, however, has more protein per oz (16g) and 0g of carbs or sugar. Simple ingredients, and nothing funky. So a big win on the nutrition front. That is great, but what won me over was the flavor. It has a nice hearty flavor, and has a little wetness to it that makes the texture nice to chew. I have tried another brand of biltong, but I found it too dry for my taste (kinda of like chewing on plastic). So another win on flavor and texture. Pricing is okay. Good beef jerky is not cheap, so you get what you pay for. I would like to buy in bulk, so bigger packages with better discounts would be a good offer I would jump on immediately.
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Reviewed in the United States on May 22, 2019

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