• Silver-colored arista qdd-400g-plr4-s sfp+ transceiver modules with blue handles and metallic connectors for 10km smf use
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Arista

Arista QDD-400G-PLR4-S | 400G-PLR4 QSFP-DD Transceiver, 4x100G, 10km SMF, SN

Arista QDD-400G-PLR4-S | 400G-PLR4 QSFP-DD Transceiver, 4x100G, 10km SMF, SN

QDD-400G-PLR4-S

Stock Status: Enquire

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Description

The Arista QDD-400G-PLR4-S is a 400G QSFP-DD optical transceiver supporting both 400GBASE-PLR4 and 4x100GBASE-LR operation over parallel single-mode fibre (SMF), with reach up to 10km. Featuring SN optical connectors, this transceiver is purpose-built for high-density data centre interconnects, spine-to-leaf links, and enterprise campus core deployments where breakout to 4x100G is required. Its QSFP-DD form factor delivers industry-leading port density for 400G-capable Arista switches and routers.

The PLR4 modulation scheme uses four parallel lanes at 100G each (100G PAM4 per lane), enabling flexible deployment in both 400G native mode and 4x100G breakout configurations via MPO or SN-to-LC breakout cabling. This transceiver is compatible with Arista's 7500R3, 7280R3, and 7060X4 series platforms, making it an ideal choice for organisations scaling to 400G infrastructure. Source this transceiver for your Australian network build today — iptrading.com.au — your local source for enterprise-grade networking solutions.

Features

- 400G QSFP-DD form factor for maximum port density on next-generation switches
- Supports both 400GBASE-PLR4 native mode and 4x100GBASE-LR breakout operation
- 10km reach over parallel single-mode fibre — ideal for campus and data centre interconnects
- SN optical connectors for high-density fibre management at the patch panel
- Four parallel 100G PAM4 lanes enabling flexible breakout to legacy 100G infrastructure
- Compatible with Arista 7500R3, 7280R3, 7060X4 and other QSFP-DD 400G platforms
- Low power consumption suitable for high-density line cards
- Compliant with 400G-PLR4 MSA and IEEE 802.3bs standards

Warranty

Arista hardware products come with a 1-year limited hardware warranty, covering defects in materials and workmanship under normal use.
Extended Warranty Options:
IP Trading offers tailored extended warranty solutions and support packages for Arista products. Contact our team to explore options that align with your organisation's needs.
https://www.arista.com/assets/data/pdf/Warranty.pdf

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

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Technical Specifications

FAQs

Technical Specifications

- Form Factor: QSFP-DD (Double Density)
- Data Rate: 400G (PLR4) or 4x 100G (LR) breakout
- Modulation: 100G PAM4 per lane, 4 parallel lanes
- Fibre Type: Parallel Single-Mode Fibre (SMF)
- Reach: Up to 10km
- Connector Type: SN optical connector
- Wavelength: 1310nm (CWDM4 / LR4 range)
- Breakout Support: 4x 100GBASE-LR via MPO/SN breakout cable
- Compatibility: Arista 7500R3, 7280R3, 7060X4 series (and other 400G QSFP-DD platforms)
- Operating Temperature: 0°C to 70°C (commercial)
- Power Consumption: Approximately 3.5W (typical)
- Standards Compliance: IEEE 802.3bs, 400G-PLR4 MSA

FAQs

Q: What is the difference between 400G-PLR4 and 400G-LR4?
A: PLR4 uses four parallel fibre lanes (each carrying 100G PAM4) over a parallel SMF cable (typically MPO-12), while LR4 uses four wavelengths over a single duplex SMF fibre. PLR4 is more cost-effective for data centre interconnects up to 10km where parallel fibre infrastructure is already in place, and supports breakout to 4x100G more naturally.

Q: Can this transceiver break out into 4x 100G connections?
A: Yes. Using an appropriate SN-to-LC or MPO breakout cable, the QDD-400G-PLR4-S can be split into four independent 100GBASE-LR links, each operating up to 10km. This is ideal for connecting to existing 100G infrastructure or maximising port utilisation on 400G-capable switches.

Q: What optical connector does the QDD-400G-PLR4-S use?
A: This transceiver uses SN optical connectors, which are a high-density, push-pull duplex connector type designed for data centre environments. SN connectors offer a smaller footprint than LC connectors, enabling greater fibre density at the patch panel.

Q: Which Arista platforms are compatible with this transceiver?
A: The QDD-400G-PLR4-S is designed for Arista switches and routers with QSFP-DD ports supporting 400G, including the 7500R3, 7280R3, and 7060X4 series. Always verify compatibility with your specific platform and EOS version via Arista's transceiver compatibility matrix.

Q: Can I purchase the Arista QDD-400G-PLR4-S in Australia?
A: Yes. IP Trading (iptrading.com.au) is an Australian B2B IT hardware reseller stocking Arista transceivers and networking components. Contact the team for pricing, lead times, and volume purchase options for Australian enterprise and data centre projects.

Q: Is this transceiver suitable for data centre spine-leaf deployments?
A: Absolutely. The 400G-PLR4 format is commonly used in hyperscale and enterprise data centre spine-to-leaf and data centre interconnect (DCI) applications. With 10km reach over parallel SMF and support for 4x100G breakout, it provides the flexibility needed for modern high-density network architectures.

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