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Arista QSFP-40G-PLR4 40GBASE-PLR4 QSFP+ 1310nm 10 km SMF
40 Gbps 40GBASE-PLR4 QSFP+ transceiver, 1310 nm, up to 10 km SMF, 0 to 70 °C case temperature.
- Manufacturer
- Arista Networks, Inc.
- Mfr part number
- QSFP-40G-PLR4
- Series
- 40G QSFP+
- Category
- Fiber optic transceiver modules
- Datasheet
- QSFP-40G-PLR4 datasheet (PDF)
QSFP-40G-PLR4 specifications
| Attribute | Value |
|---|---|
| Part Number | QSFP-40G-PLR4 |
| Manufacturer | Arista Networks, Inc. |
| Brand | Arista Networks |
| Standard | 40GBASE-PLR4 |
| Form Factor | QSFP+, hot-swappable |
| Data Rate | 40 Gbps |
| Wavelength | 1310 nm |
| Media | Parallel single-mode (G.652) |
| Max Distance | 10 km SMF |
| Connector | MPO-12 APC |
| Tx Power | −8.2 to +0.5 dBm/lane |
| Rx Power | −14.4 to +0.5 dBm/lane |
| Breakout | 4 × 10G-LR |
| Max Power | 3.5 W |
| Case Temp | 0 °C to 70 °C |
| Dimensions | 13.5 × 18.4 × 72.4 mm |
| Compliance | IEEE 802.3, SFF-8436/8636 |
| Reach detail | 10 km on parallel single-mode fiber (4 × 10G-LR up to 10 km, LRL up to 1 km) |
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-PLR4
The Arista QSFP-40G-PLR4 is a hot-swappable QSFP+ 40GBASE-PLR4 optical transceiver for 40 Gbps Ethernet over parallel single-mode (G.652), with a MPO-12 APC interface and reach of up to 10 km SMF. It also supports breakout to 4 × 10G-LR. Typical uses: 40G spine and aggregation links, 4 × 10G breakout and data-centre interconnect.
- 40 Gbps 40GBASE-PLR4 up to 10 km SMF
- Breakout to 4 × 10G-LR (10 km)
- Parallel single-mode MPO-12 APC
- MPO-12 APC connector · Parallel single-mode (G.652)
- Genuine Arista optic · GST invoice · pan-India dispatch
QSFP-40G-PLR4: frequently asked questions
What is the Arista QSFP-40G-PLR4?
The Arista QSFP-40G-PLR4 is a QSFP+ 40GBASE-PLR4 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-PLR4?
Arista specifies the QSFP-40G-PLR4 for 10 km on parallel single-mode fiber (4 × 10G-LR up to 10 km, LRL up to 1 km).
What are the transmit and receive power levels of the QSFP-40G-PLR4?
Per Arista's published optics data sheet, the QSFP-40G-PLR4 transmits −8.2 to +0.5 dBm/lane and receives −14.4 to +0.5 dBm/lane.
Which fiber and connector does the QSFP-40G-PLR4 need?
The QSFP-40G-PLR4 uses a MPO-12 APC connector on parallel single-mode (G.652), at 1310 nm. APC connectors have an angled (green) end-face, so use APC patch cords and trunks. Both ends of the link must use the same optical standard.
Is the QSFP-40G-PLR4 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-PLR4 vs QSFP-40G-PLRL4: what is the difference?
Both are parallel single-mode optics (MPO-12 APC) that can break out to 4 × 10G-LR. PLR4 reaches 10 km; PLRL4 reaches 1 km.
Does the QSFP-40G-PLR4 support breakout?
Yes. Arista lists breakout to 4 × 10G-LR. Use the matching optics at the far end and a suitable breakout cable or patch panel.
Is your QSFP-40G-PLR4 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-PLR4 price in India and how do I order?
The Arista QSFP-40G-PLR4 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-PLR4 draw?
Arista lists maximum power of 3.5 W for the QSFP-40G-PLR4. 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-PLRL440GBASE-PLRL4, 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-UNIV40GBASE-UNIV, 150 m MMF / 500 m SMFGovernment, PSU and enterprise orders welcome. GST invoice and pan-India delivery.
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