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NVIDIA Mellanox MAM1Q00A-QSA28 QSFP28 to SFP28 port adapter
QSFP28 to SFP28 port adapter (QSA28): lets a QSFP28 port run one SFP-type module at 25 Gbps (or 10/1 Gbps). NVIDIA LinkX part, SKU 980-9I78I-00A000.
- Manufacturer
- NVIDIA Corporation (Mellanox)
- Mfr part number
- MAM1Q00A-QSA28
- NVIDIA SKU
- 980-9I78I-00A000
- Series
- LinkX 25G QSFP28 adapter
- Category
- Port adapters
- Datasheet
- MAM1Q00A-QSA28 datasheet (PDF)
MAM1Q00A-QSA28 specifications
| Attribute | Value |
|---|---|
| Part Number | MAM1Q00A-QSA28 |
| Manufacturer | NVIDIA Corporation (Mellanox Technologies) |
| Brand | NVIDIA Mellanox |
| NVIDIA SKU | 980-9I78I-00A000 |
| Standard | QSFP28 to SFP28 port adapter (QSA28) |
| Form Factor | QSFP28 adapter, hot-swappable |
| Data Rate | 25 Gbps (or 10/1 Gbps) |
| Protocol | Ethernet |
| Wavelength | N/A (adapter) |
| Media | Per inserted module (SFP28 / SFP+ / SFP) |
| Max Distance | Per inserted module |
| Connector | QSFP28 plug / SFP28 cage |
| Lifecycle | Current NVIDIA part |
| Case Temp | 0 °C to 70 °C (commercial) |
| Dimensions | QSFP housing, accepts one SFP-type module |
| Compliance | SFF-8436 (QSFP) / SFF-8431 (SFP+) |
| Monitoring | Passes through to the inserted module |
| Reach detail | depends on the SFP28 / SFP+ / SFP module inserted |
Values are from NVIDIA's LinkX product pages, ordering tables and firmware 'validated and supported cables and modules' lists (Oct 2026). Confirm platform and firmware support for your switch or adapter with us before ordering.
About the NVIDIA Mellanox MAM1Q00A-QSA28
The NVIDIA Mellanox MAM1Q00A-QSA28 is a hot-swappable QSFP28 to SFP28 port adapter (QSA28) that fits a QSFP28 port and accepts an SFP-type module, so the port can run a 25 Gbps (or 10/1 Gbps) link. The QSA28 lets a 100GbE QSFP28 port on a Spectrum switch or ConnectX adapter accept an SFP28, SFP+ or SFP module, giving a 25G, 10G or 1G link from a 100G port. Typical uses: 25GbE server access, leaf-spine fabrics and 10G-to-25G migrations on ConnectX adapters and Spectrum switches.
- 25 Gbps QSFP28 to SFP28 port adapter
- Runs a 25G SFP28 (or 10G/1G SFP) module in a 100G QSFP28 port
- Current NVIDIA LinkX part, also the replacement for QSA56
- QSFP28 plug / SFP28 cage · no software or licence needed
- Genuine NVIDIA Mellanox part · GST invoice · pan-India dispatch
MAM1Q00A-QSA28: frequently asked questions
What is the NVIDIA Mellanox MAM1Q00A-QSA28?
The MAM1Q00A-QSA28 is a QSFP28 to SFP28 port adapter (QSA28) from NVIDIA's LinkX range. It plugs into a QSFP28 port on an NVIDIA / Mellanox switch or adapter and holds one SFP-type module, so that port can run a 25 Gbps (or 10/1 Gbps) link. It is used for 25GbE server access, leaf-spine fabrics and 10G-to-25G migrations on ConnectX adapters and Spectrum switches.
What is the NVIDIA SKU for the MAM1Q00A-QSA28?
NVIDIA's current ordering number for the MAM1Q00A-QSA28 is 980-9I78I-00A000. Newer NVIDIA price lists, quotes and firmware support tables use this 980-/930- SKU, while older documents and most resellers use the legacy OPN MAM1Q00A-QSA28. They are the same module; quote either and we will match it.
Which modules can I insert in the MAM1Q00A-QSA28?
Any SFP-type module the port adapter class supports: SFP28 / SFP+ / SFP modules. Reach, wavelength and connector then depend on that module, not on the adapter.
Is the MAM1Q00A-QSA28 compatible with my NVIDIA / Mellanox switch or adapter?
It works in NVIDIA and Mellanox platforms with QSFP-type ports that list this part in their firmware 'validated and supported cables and modules' table. Send us your switch / adapter model and firmware version and we check it against NVIDIA's support list before dispatch, so you only receive a module that links up in your port.
Does the QSA28 work in a 200G QSFP56 port?
Yes. NVIDIA lists MAM1Q00A-QSA28 as the replacement for the QSA56, so it is used in QSFP56 (200G) ports as well as QSFP28 (100G) ports. The inserted module then runs at its own rate (25G/10G/1G).
Is your MAM1Q00A-QSA28 genuine NVIDIA / Mellanox?
Yes. Next Gen Networks supplies original NVIDIA (Mellanox) LinkX parts, not third-party lookalikes or grey-market stock. Every unit is checked before dispatch and we share serial numbers on request so you can verify them with mlxlink / mlxcables or the switch's transceiver inventory.
What is the MAM1Q00A-QSA28 price in India and how do I order?
The NVIDIA Mellanox MAM1Q00A-QSA28 price in India depends on quantity, delivery city and current stock. Next Gen Networks supplies it with a GST invoice (input tax credit ready) and pan-India dispatch from New Delhi. Send the part number (or NVIDIA SKU 980-9I78I-00A000), quantity and delivery city on WhatsApp +91-7827955775 or email Sales@nextgennetworks.in and we reply with a GST quote.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideDownload datasheet
Mellanox_MAM1Q00A-QSA28_Datasheet_NextGenNetworks.pdfNVIDIA LinkX documentation
Manufacturer product pages
Related NVIDIA Mellanox parts
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