• 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-O400-4Q100-2M-Arista | 400G OSFP to 4x 100G QSFP28 Breakout Cable, 2m

H-O400-4Q100-2M-Arista

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Description

This Arista active copper breakout cable connects a single 400G OSFP port to four 100G QSFP28 ports. It suits data centre switching where a 400G OSFP switch port needs to fan out to four 100G server or switch ports over a short reach. This SKU is the 2 metre length.

The OSFP end carries 8x 50G PAM-4 electrical lanes, while each QSFP end carries 4x 25G NRZ lanes. An internal gearbox in the QSFP end converts 2x 50G PAM-4 to 4x 25G NRZ, so the cable is built as 400GBASE-CR8 to 4x 100GBASE-CR4. Maximum power is 10W at the OSFP end and 4W at each QSFP end, drawn from the host port. The cable is part of Arista's active copper range, which is offered in 1, 2, 3 and 5 metre lengths.

It links 400G OSFP ports to 100G QSFP ports. Platform support varies, so check Arista's Transceiver and Cable Guide for the supported switches.

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

Features

- Connects a 400G OSFP port to four 100G QSFP ports for 400G-to-4x100G breakout
- Active copper design with internal gearbox for PAM-4 to NRZ lane conversion
- Part of an active copper family offering 1, 2, 3 and 5 metre lengths
- Powered from the host port, with no separate power connection
- Suited to short-reach data centre links between switches and servers

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 number: H-O400-4Q100-2M
- PHY type: 400GBASE-CR8 to 4x 100GBASE-CR4
- Cable type: OSFP to 4x QSFP active copper twinax
- Cable length: 2 m
- OSFP-side electrical interface: 8x 50G PAM-4 lanes
- QSFP-side electrical interface: 4x 25G NRZ lanes per QSFP
- Gearbox: in QSFP end, converts 2x 50G PAM-4 to 4x 25G NRZ
- Maximum power: 10 W (OSFP end), 4 W (each QSFP end)
- OSFP form factor (H x W x D): 13.0 x 22.6 x 100.4 mm
- QSFP form factor (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

FAQs

Q: What does this cable connect?
A: It connects one 400G OSFP port (8x 50G PAM-4 lanes) to four 100G QSFP ports (4x 25G NRZ lanes each), providing a 400G-to-4x100G breakout.

Q: Does it need external power?
A: No. It is powered from the host port, drawing up to 10W at the OSFP end and 4W at each QSFP end.

Q: What lengths are available in this cable family?
A: The active copper breakout range is offered in 1, 2, 3 and 5 metre lengths. This SKU is the 2 metre version.

Q: Which switches support this cable?
A: Platform support varies by switch model. Refer to Arista's Transceiver and Cable Guide to confirm support for your platform.

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