• 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 H-O400-4Q100-1M-Arista | 400G OSFP to 4x 100G QSFP28 Breakout Cable, 1m, Active Copper

H-O400-4Q100-1M-Arista

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Description

This Arista 1 metre active copper twinax breakout cable connects one 400G OSFP port to four 100G QSFP ports. It suits data centre leaf and spine designs where a 400G switch port needs to feed four 100G servers, storage arrays or switches over a short run.

The OSFP end carries 8x 50G PAM-4 electrical lanes. A gearbox in each QSFP end converts 2x 50G PAM-4 to 4x 25G NRZ lanes, so every QSFP leg presents a standard 100G interface. As a copper cable, it is a lower-power alternative to optical breakout for in-rack and adjacent-rack links. Power is drawn from the host port, with a maximum of 10 W at the OSFP end and 4 W at each QSFP end. No licence or subscription is required.

It is designed for Arista switches with 400G OSFP ports and requires EOS 4.25.2 or later. The QSFP ends connect to 100G QSFP100 ports. Pull-tab release and hot-swappable pluggable ends simplify installation and changes.

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

Features

- Breaks out one 400G OSFP port to four 100G QSFP100 ports
- Built-in gearbox converts 2x 50G PAM-4 lanes to 4x 25G NRZ lanes at each QSFP end
- Lower-power alternative to optical breakout for short links
- Hot-swappable pluggable ends with pull-tab release
- Interoperates with 100G QSFP ports
- Powered from the host port, no separate power needed

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

- Part number: H-O400-4Q100-1M
- PHY type: 400GBASE-CR8 to 4x 100GBASE-CR4
- Connector type: OSFP to 4x QSFP
- Cable type: Active Copper Cable (twinax)
- Length: 1 m
- OSFP host electrical interface: 8x 50G PAM-4
- QSFP breakout electrical interface: 4x 25G NRZ per QSFP via gearbox
- Maximum power: OSFP 10 W, QSFP 4 W per connector
- OSFP connector size (H x W x D): 13.0 x 22.6 x 100.4 mm
- QSFP connector size (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 to 10,000 ft
- Latch type: Pull tab
- Minimum EOS version: 4.25.2
- Certifications: CE, KCC, RCM, UKCA

FAQs

Q: Does this cable need a licence or subscription?
A: No. It is a passive-powered pluggable cable that draws power from the host port and needs no licence or subscription.

Q: Which switches does it work with?
A: It is intended for Arista switches with 400G OSFP ports and needs EOS 4.25.2 or later. The QSFP ends connect to 100G QSFP100 ports. Check Arista's transceiver guide platform tables for supported models.

Q: How much power does it draw?
A: Maximum draw is 10 W at the OSFP end and 4 W at each QSFP end, supplied by the host ports.

Q: Is this an optical AOC or a copper cable?
A: It is an active copper twinax cable with a gearbox in the QSFP ends, suited to short in-rack and adjacent-rack runs of up to 1 m.

Q: Is there a QSFP-DD version?
A: Yes. The QSFP-DD equivalent is the Arista H-D400-4Q100-xM range. This SKU is the OSFP version.

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