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NVIDIA Mellanox T100G-QSFP28-CWDM4 100G CWDM4 QSFP28 1310nm 2 km SMF
100 Gbps (4 × 25G) 100G CWDM4 QSFP28 transceiver, 1310 nm band, up to 2 km SMF, Ethernet.
- Manufacturer
- NVIDIA Corporation (Mellanox)
- Mfr part number
- T100G-QSFP28-CWDM4
- Series
- LinkX 100G QSFP28
- Category
- Fiber optic transceiver modules
- Datasheet
- T100G-QSFP28-CWDM4 datasheet (PDF)
T100G-QSFP28-CWDM4 specifications
| Attribute | Value |
|---|---|
| Part Number | T100G-QSFP28-CWDM4 |
| Manufacturer | NVIDIA Corporation (Mellanox Technologies) |
| Brand | NVIDIA Mellanox |
| Standard | 100G CWDM4 |
| Form Factor | QSFP28, hot-swappable |
| Data Rate | 100 Gbps (4 × 25G) |
| Protocol | Ethernet |
| Wavelength | 1310 nm band (CWDM4, 4 lanes) |
| Media | Single-mode fiber (OS2) |
| Max Distance | 2 km SMF |
| Connector | Duplex LC |
| Lifecycle | Legacy / end-of-life (stock on request) |
| Case Temp | 0 °C to 70 °C (commercial) |
| Dimensions | 8.5 × 18.4 × 72.4 mm |
| Compliance | IEEE 802.3 / IBTA, SFF-8636 |
| Reach detail | up to 2 km on single-mode fiber |
| Ordering note | Cumulus Express part (Mellanox OPN 100G-QSFP28-CWDM4). Current NVIDIA equivalent on request. |
| Part-number note | Cumulus Express part |
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 T100G-QSFP28-CWDM4
The NVIDIA Mellanox T100G-QSFP28-CWDM4 is a hot-swappable QSFP28 100G CWDM4 optical transceiver for 100 Gbps Ethernet links over single-mode fiber, with a Duplex LC interface and reach of up to 2 km SMF. It is a Cumulus Express transceiver that NVIDIA sold with Cumulus Linux white-box switch bundles; the family is now end-of-life (NVIDIA LCR-000637). Typical uses: 100GbE leaf-spine fabrics, EDR InfiniBand HPC clusters, storage and data-center interconnect.
- 100 Gbps 100G CWDM4 up to 2 km SMF
- Cumulus Express 100GbE QSFP28 CWDM4
- 1310 nm band, Duplex LC
- Duplex LC connector · Single-mode fiber
- Genuine NVIDIA Mellanox part · GST invoice · pan-India dispatch
T100G-QSFP28-CWDM4: frequently asked questions
What is the NVIDIA Mellanox T100G-QSFP28-CWDM4?
The T100G-QSFP28-CWDM4 is a QSFP28 100G CWDM4 module from NVIDIA's LinkX range for 100 Gbps Ethernet links. It plugs into a QSFP28 (or QSFP56) port on an NVIDIA / Mellanox switch, adapter or DPU and is used for 100GbE leaf-spine fabrics, EDR InfiniBand HPC clusters, storage and data-center interconnect.
What is the maximum distance of the T100G-QSFP28-CWDM4?
NVIDIA specifies the T100G-QSFP28-CWDM4 for up to 2 km on single-mode fiber.
Which fiber and connector does the T100G-QSFP28-CWDM4 need?
The T100G-QSFP28-CWDM4 uses a Duplex LC connector on single-mode fiber (OS2), at 1310 nm band (CWDM4, 4 lanes). Both ends of the link must use the same optical standard.
Is the T100G-QSFP28-CWDM4 compatible with my NVIDIA / Mellanox switch or adapter?
It works in NVIDIA and Mellanox platforms with QSFP28 (or QSFP56) 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.
Is the T100G-QSFP28-CWDM4 still available?
NVIDIA has marked the T100G-QSFP28-CWDM4 legacy / end-of-life, so it is no longer in regular production. Next Gen Networks sources genuine new and surplus stock on request. Cumulus Express part (Mellanox OPN 100G-QSFP28-CWDM4). Current NVIDIA equivalent on request. Tell us the quantity and we will confirm availability, or suggest the current NVIDIA equivalent.
Is your T100G-QSFP28-CWDM4 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 T100G-QSFP28-CWDM4 price in India and how do I order?
The NVIDIA Mellanox T100G-QSFP28-CWDM4 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, 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_T100G-QSFP28-CWDM4_Datasheet_NextGenNetworks.pdfNVIDIA LinkX documentation
Manufacturer product pages
Related NVIDIA Mellanox parts
T100G-QSFP28-M-SR4100GBASE-SR4, 70 m OM3 / 100 m OM4MMA1B00-C100D100GBASE-SR4, 70 m OM3 / 100 m OM4MMA1B00-C100100GBASE-SR4, 100 m OM4MMA1B00-C100_B100GBASE-SR4, 100 m OM4MMA1B00-C100D_FF100GBASE-SR4, 100 m OM4MMA1B00-C100-TG100GBASE-SR4, 100 m OM4AI / HPC cluster, government, PSU and enterprise orders welcome. GST invoice and pan-India delivery.
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