• 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-D400-4Q100-5M-Arista | 400G QSFP-DD to 4x 100G QSFP28 Active Copper Cable, 5m

H-D400-4Q100-5M-Arista

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Description

This Arista active copper breakout cable connects a single 400G QSFP-DD port to four 100G QSFP28 ports. It suits data centre spine and leaf deployments where a 400G switch port needs to feed 100G servers or switches over short in-rack or adjacent-rack runs of up to 5 metres.

The QSFP-DD end carries 8x 50G PAM4 electrical lanes, while each of the four QSFP ends carries 4x 25G NRZ lanes. A gearbox inside the QSFP end of the cable converts 2x 50G PAM4 to 4x 25G NRZ. The link is 400GBASE-CR8 to 4x 100GBASE-CR4 over twinax active copper. Maximum power draw is 10 W at the QSFP-DD end and 4 W at each QSFP end, supplied by the host switch ports, so no separate power supply is needed. Operating case temperature is 0 to 70 C.

The cable works between an Arista 400G QSFP-DD port and four 100G QSFP28 (QSFP100) ports. Supported platforms are listed in Arista's Transceiver and Cable Guide.

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

Features

- Connects one 400G QSFP-DD port to four 100G QSFP ports with a single breakout cable
- Built-in gearbox converts 8x 50G PAM4 electrical lanes to 4x 25G NRZ lanes per QSFP
- Active copper design supports reach of up to 5 m
- Powered by the host switch ports, with no separate supply needed
- Compliant with EU Low Voltage, EMC, WEEE and RoHS directives

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

- Product type: Active copper breakout cable (twinax)
- Length: 5 m
- PHY type: 400GBASE-CR8 to 4x 100GBASE-CR4
- Connector type: QSFP-DD to 4x QSFP (QSFP28)
- Electrical interface, QSFP-DD end: 8x 50G PAM4
- Electrical interface, QSFP end: 4x 25G NRZ per QSFP
- Gearbox: converts 2x 50G PAM4 to 4x 25G NRZ in the QSFP end
- Power consumption, QSFP-DD end: 10 W max
- Power consumption, each QSFP end: 4 W max
- QSFP-DD connector dimensions (Type 1): 13.5 x 18.4 x 78.3 mm (H x W x D)
- QSFP-DD connector dimensions (Type 2): 13.5 x 18.4 x 93.3 mm (H x W x D)
- QSFP connector dimensions: 13.5 x 18.4 x 72.4 mm (H x W x D)
- Operating case temperature: 0 to 70 C
- Storage temperature: -40 to 70 C
- Wavelength: Not applicable (copper)

FAQs

Q: Does this cable need a separate power supply?
A: No. It is powered by the host switch ports. Maximum draw is 10 W at the QSFP-DD end and 4 W at each QSFP end.

Q: What can the four breakout ends connect to?
A: Each of the four QSFP ends connects to a 100G QSFP28 (QSFP100) port, running 100GBASE-CR4 over 4x 25G NRZ lanes.

Q: Which platforms is it supported on?
A: It links an Arista 400G QSFP-DD port to four 100G QSFP28 ports. Supported platforms are listed in Arista's Transceiver and Cable Guide.

Q: How does this 5 m cable differ from the other lengths?
A: The H-D400-4Q100 family is offered in 1, 2, 3 and 5 m lengths. This SKU is the 5 m version, with the same electrical design and breakout configuration.

Q: Is this cable suitable for longer runs between racks?
A: It is an active copper cable designed for short links of up to 5 m, such as in-rack or adjacent-rack connections. Longer distances need an optical solution.

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