• Silver-colored arista H-D400-4Q100-1M sfp+ transceiver modules with blue handles and metallic connectors for 400g active DAC
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Arista

Arista QSFP-40G-LR4-Arista | 40G QSFP+ LR4 Transceiver, Single-Mode, 10km, Duplex LC

QSFP-40G-LR4-Arista

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Description

This is a 40GBASE-LR4 QSFP+ optical transceiver from Arista's 40G QSFP+ optics range. It carries 40GbE over duplex single-mode fibre with LC connectors, and suits campus, data centre and inter-building links where multimode reach is not enough. It is also a practical option when migrating from 10G to 40G and from multimode to single-mode cabling.

The module reaches up to 10km over SMF G.652 fibre using four CWDM lanes at 1271, 1291, 1311 and 1331 nm. Transmit power is -7 to +2.3 dBm per lane and receive power is -13.7 to +2.3 dBm per lane. Maximum power consumption is 3.5 W, drawn from the host switch's QSFP+ port, so no separate power supply is needed. It is hot-swappable and operates across a case temperature of 0 to 70 C.

It works with Arista switches that have QSFP+ (40G) ports. It interoperates with IEEE 40GBASE-LR4 optics and with Arista 40GBASE-LRL4 optics over distances up to 1km. Check Arista's Transceiver Compatibility Matrix for supported platforms and EOS versions.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Hot-swappable to maximise uptime and simplify serviceability
- Duplex single-mode operation to 10km for campus and data centre interconnect
- Interoperable with IEEE 40GbE LR4 and LRL4 optics
- Eases migration from 10G to 40G and to single-mode fibre
- Four CWDM lanes carried over a single duplex LC fibre pair
- Powered by the host switch port with a maximum draw of 3.5 W
- Part of Arista's 40G QSFP+ optics range alongside SR4, XSR4, BIDI, UNIV, LRL4, PLR4 and ER4

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- PHY type: 40GBASE-LR4
- Form factor: QSFP+
- Connector type: LC (duplex)
- Cable type: SMF G.652
- Wavelengths: 1271, 1291, 1311, 1331 nm (4 CWDM lanes)
- Tx power: -7 to +2.3 dBm per lane
- Rx power: -13.7 to +2.3 dBm per lane
- Maximum reach: 10km
- Interoperability: 40GBASE-LRL4 up to 1km
- Power consumption (max): 3.5 W
- Dimensions (H x W x D): 13.5 x 18.4 x 72.4 mm
- Operating case temperature: 0 to 70 C
- Storage temperature: -40 to 70 C
- Relative humidity: 5 to 95%
- Operating altitude: 0-10,000 ft
- Standards: IEEE 802.3 Ethernet; QSFP+ SFF-8449 and SFF-8636; GR-20-CORE, GR-326-CORE, GR-1435-CORE

FAQs

Q: What fibre type and connector does this transceiver use?
A: It uses duplex single-mode fibre (SMF G.652) with LC connectors. Four CWDM lanes share the one fibre pair.

Q: What is the maximum reach?
A: Up to 10km over single-mode fibre. It also interoperates with Arista 40GBASE-LRL4 optics over distances up to 1km.

Q: Does it need a separate power supply or licence?
A: No. It draws a maximum of 3.5 W from the host switch's QSFP+ port and needs no separate power supply.

Q: Which switches does it work with?
A: Arista switches with QSFP+ (40G) ports. Check Arista's Transceiver Compatibility Matrix for supported platforms and EOS versions.

Q: Can it link to other vendors' 40GBASE-LR4 optics?
A: Yes. It interoperates with IEEE 40GBASE-LR4 optics, so it can terminate a link to a standards-compliant module at the far end.

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