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Arista

Arista H-O400-4Q100-5M-Arista | 400G OSFP to 4x 100G QSFP28 Breakout Cable, 5m

SKU:H-O400-4Q100-5M-Arista

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Description

This Arista active copper breakout cable connects one 400G OSFP port to four 100G QSFP ports over a 5 metre run. It is built for high-density data centre links between OSFP switch ports and 100G QSFP servers, storage or switches, whether in the same rack or an adjacent one.

The OSFP end carries 8x 50G PAM-4 electrical lanes, while each of the four QSFP ends presents 4x 25G NRZ lanes as a QSFP100 interface. A gearbox in the QSFP end converts 2x 50G PAM-4 lanes to 4x 25G NRZ. The cable is a pre-terminated 400GBASE-CR8 to 4x 100GBASE-CR4 twinax assembly, so no separate optics are needed. It is powered from the host port, with a maximum of 10W at the OSFP end and 4W at each QSFP end. The active design supports the 5m length, beyond the 3m limit of passive 400G twinax.

It connects a 400G OSFP port to four 100G QSFP100 ports. A related QSFP-DD variant is available as H-D400-4Q100-xM in 1, 2, 3 and 5 metre lengths. Check the Arista Transceiver Compatibility Matrix for supported platforms and EOS versions.

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

Features

- Breaks out one 400G OSFP port into four 100G QSFP ports
- Active copper design supports link lengths up to 5m
- Built-in gearbox converts 2x 50G PAM-4 lanes to 4x 25G NRZ lanes for QSFP100 interoperability
- Pre-terminated cable assembly with no separate optics required
- Powered from the host port with no external power needed
- Carries Australia RCM, CE, KCC and UKCA certifications and is RoHS compliant

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-O400-4Q100-5M
- PHY type: 400GBASE-CR8 to 4x 100GBASE-CR4
- Cable type: OSFP to 4x QSFP, active copper twinax
- Cable length: 5 metres
- 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 (OSFP end): 10W
- Maximum power (each QSFP end): 4W
- OSFP end dimensions (H x W x D): 13.0 x 22.6 x 100.4 mm
- QSFP end dimensions (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
- Safety: EN 62368-1:2014 + A11:2017, IEC 62368-1:2014, Laser Class 1 or 1M IEC/EN 60825-1
- EMC: FCC Part 15 Subpart B Class A, ICES-003 Issue 7, EN 55032:2015, EN 55035:2017, EN 300 386 V2.1.1
- Certifications: CE, KCC, RCM, UKCA, RoHS

FAQs

Q: What ports does this breakout cable connect?
A: It connects one 400G OSFP port (8x 50G PAM-4 electrical lanes) to four 100G QSFP100 ports (4x 25G NRZ lanes each).

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

Q: Why is this an active cable rather than passive?
A: The active design lets the cable reach 5m, whereas passive 400G twinax is limited to 3m. A gearbox in the QSFP end converts 2x 50G PAM-4 lanes to 4x 25G NRZ lanes.

Q: Is there a version for QSFP-DD ports?
A: Yes. The related QSFP-DD variant is H-D400-4Q100-xM, available in 1, 2, 3 and 5 metre lengths.

Q: How do I confirm platform and software support?
A: Check the Arista Transceiver Compatibility Matrix for supported platforms and EOS versions before ordering.

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