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Arista QSFP-40G-UNIV 40GBASE-UNIV QSFP+
40 Gbps 40GBASE-UNIV (universal) QSFP+ transceiver, 1271 / 1291 / 1311 / 1331 nm, up to 150 m MMF / 500 m SMF, 0 to 70 °C case temperature.
- Manufacturer
- Arista Networks, Inc.
- Mfr part number
- QSFP-40G-UNIV
- Series
- 40G QSFP+
- Category
- Fiber optic transceiver modules
- Datasheet
- QSFP-40G-UNIV datasheet (PDF)
QSFP-40G-UNIV specifications
| Attribute | Value |
|---|---|
| Part Number | QSFP-40G-UNIV |
| Manufacturer | Arista Networks, Inc. |
| Brand | Arista Networks |
| Standard | 40GBASE-UNIV (universal) |
| Form Factor | QSFP+, hot-swappable |
| Data Rate | 40 Gbps |
| Wavelength | 1271 / 1291 / 1311 / 1331 nm |
| Media | Duplex MMF (OM3/OM4) or SMF |
| Max Distance | 150 m MMF / 500 m SMF |
| Connector | Duplex LC |
| Tx Power | −7 to +4.3 dBm/lane (MMF) |
| Rx Power | −10 to +4.3 dBm/lane (MMF) |
| Max Power | 3.5 W |
| Case Temp | 0 °C to 70 °C |
| Dimensions | 13.5 × 18.4 × 72.4 mm |
| Reach detail | 150 m on duplex OM3/OM4 multimode fiber, or 500 m on duplex single-mode fiber |
All values are from Arista Networks' published Optics Modules and Cables data sheet (Sep 2026). Confirm platform support for your switch with us before ordering.
About the Arista QSFP-40G-UNIV
The Arista QSFP-40G-UNIV is a hot-swappable QSFP+ 40GBASE-UNIV (universal) optical transceiver for 40 Gbps Ethernet over duplex MMF (OM3/OM4) or SMF, with a Duplex LC interface and reach of up to 150 m MMF / 500 m SMF. Arista's universal optic is a favourite for stocking: one part covers both multimode and single-mode duplex runs. Typical uses: 40G spine and aggregation links, 4 × 10G breakout and data-centre interconnect.
- 40 Gbps 40GBASE-UNIV up to 150 m MMF / 500 m SMF
- One optic for both multimode and single-mode
- Duplex LC: reuse existing 10G fibre
- Duplex LC connector · Duplex MMF (OM3/OM4) or SMF
- Genuine Arista optic · GST invoice · pan-India dispatch
QSFP-40G-UNIV: frequently asked questions
What is the Arista QSFP-40G-UNIV?
The Arista QSFP-40G-UNIV is a QSFP+ 40GBASE-UNIV (universal) module from Arista Networks for 40 Gbps links. It plugs into a QSFP+ port on an Arista switch and is used for 40G spine and aggregation links, 4 × 10G breakout and data-centre interconnect.
What is the maximum distance of the QSFP-40G-UNIV?
Arista specifies the QSFP-40G-UNIV for 150 m on duplex OM3/OM4 multimode fiber, or 500 m on duplex single-mode fiber.
What are the transmit and receive power levels of the QSFP-40G-UNIV?
Per Arista's published optics data sheet, the QSFP-40G-UNIV transmits −7 to +4.3 dBm/lane (MMF) and receives −10 to +4.3 dBm/lane (MMF).
Which fiber and connector does the QSFP-40G-UNIV need?
The QSFP-40G-UNIV uses a Duplex LC connector on duplex MMF (OM3/OM4) or SMF, at 1271 / 1291 / 1311 / 1331 nm. Both ends of the link must use the same optical standard.
Is the QSFP-40G-UNIV compatible with my Arista switch?
It works in Arista switches with QSFP+ ports that support this optic. Send us your switch model and EOS version and we will check it against Arista's Transceiver and Cable Guide before dispatch, so you only receive a module that works in your port.
QSFP-40G-UNIV vs QSFP-40G-LRL4: which should I pick?
QSFP-40G-UNIV works on both duplex multimode (150 m) and single-mode (500 m). QSFP-40G-LRL4 is single-mode only but reaches 1 km. If your fibre type varies by site, UNIV is the flexible choice.
Is your QSFP-40G-UNIV genuine Arista?
Yes. Next Gen Networks supplies original Arista Networks optics, not third-party lookalikes or grey-market stock. Every unit is checked before dispatch, and we share the serial numbers on request so you can verify them in EOS ('show inventory').
What is the QSFP-40G-UNIV price in India and how do I order?
The Arista QSFP-40G-UNIV 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.
How much power does the QSFP-40G-UNIV draw?
Arista lists maximum power of 3.5 W for the QSFP-40G-UNIV. Check your switch's per-port power budget for dense deployments.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Arista family datasheet
Related Arista parts
QSFP-40G-LRL440GBASE-LRL4, 1 km SMFQSFP-40G-SR440GBASE-SR4, 100 m OM3 / 150 m OM4QSFP-40G-XSR440GBASE-XSR4, 300 m OM3 / 400 m OM4QSFP-40G-SRBD40GBASE-BIDI, 100 m OM3 / 150 m OM4QSFP-40G-SRBD-R40GBASE-BIDI, 100 m OM3 / 150 m OM4QSFP-40G-LR440GBASE-LR4, 10 km SMFGovernment, PSU and enterprise orders welcome. GST invoice and pan-India delivery.
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