• Silver-colored arista qdd-400g-vsr4 400g qsfp-dd transceiver modules with blue handles and metallic connectors
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Arista

Arista QDD-400G-VSR4 | 400G QSFP-DD VSR4 Transceiver, MMF, 50m, MPO-12

QDD-400G-VSR4

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Description

The QDD-400G-VSR4 is a 400GBASE-VSR4 QSFP-DD optical transceiver from Arista's 400G optics range. It is built for short-reach 400G connections inside the data centre, such as leaf-spine and top-of-rack to aggregation links, where parallel multi-mode fibre is already in place.

It runs at 850nm over four parallel lanes and terminates in an MPO-12 APC connector. Reach is up to 50m on OM4 fibre and 30m on OM3. Per-lane transmit power is +4.0 to -4.6 dBm and receive power is +4.0 to -6.3 dBm. Maximum module power consumption is 12W, drawn from the host QSFP-DD port, and the operating case temperature range is 0 to 70 C.

The module fits QSFP-DD ports on Arista platforms that support 400G QSFP-DD optics. It needs parallel OM3 or OM4 multi-mode fibre with MPO-12 APC connectors. The OSFP equivalent is OSFP-400G-VSR4.

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

Features

- 400GBASE-VSR4 optical interface for short-reach parallel multi-mode links
- MPO-12 APC connector with 4 parallel lanes
- Reach of up to 50m on OM4 and 30m on OM3
- Part of Arista's 400G QSFP-DD optics range, alongside SR8, BIDI, DR4, XDR4, PLR4, FR4, LR4, LR8, ER4 and ZR
- Compliant with the IEEE 802.3 Ethernet, MSA and SFF standards listed in the datasheet
- Laser Class 1/1M, CE, RCM, UKCA and RoHS compliance

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: 400GBASE-VSR4
- Form factor: QSFP-DD
- Connector type: MPO-12 APC
- Wavelength: 850 nm
- Cable type: Parallel multi-mode fibre (OM3 / OM4)
- Core size: 50.0 um
- Modal bandwidth OM3: 2000 MHzkm
- Modal bandwidth OM4: 4700 MHzkm
- Tx power: +4.0 to -4.6 dBm per lane
- Rx power: +4.0 to -6.3 dBm per lane
- Max reach OM3: 30 m
- Max reach OM4: 50 m
- Module power consumption: 12 W max
- Operating case temperature: 0 to 70 C
- Safety: Laser Class 1 or 1M (IEC/EN 60825-1)
- EMC: FCC Part 15 Class A, ICES-003 Issue 7, EN 55032:2015, EN 55035:2017
- Certifications: CE, KCC, Australia RCM, UKCA
- RoHS: 2011/65/EU and 2015/863/EU

FAQs

Q: What fibre and connector does the QDD-400G-VSR4 use?
A: It uses parallel OM3 or OM4 multi-mode fibre terminated with MPO-12 APC connectors. It operates at 850nm over four parallel lanes.

Q: How far can it reach?
A: Up to 50m on OM4 fibre and up to 30m on OM3 fibre.

Q: How much power does it draw?
A: Maximum module power consumption is 12W. It is powered by the host QSFP-DD port, so no separate power connection is needed.

Q: Which ports does it fit?
A: It fits QSFP-DD ports on Arista platforms that support 400G QSFP-DD optics. Check the host platform and EOS support on Arista's transceiver compatibility matrix.

Q: Is there an OSFP version of this module?
A: Yes. The OSFP equivalent is OSFP-400G-VSR4, for hosts with OSFP ports rather than QSFP-DD.

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