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

Q: What is the difference between OSFP and QSFP-DD form factors for 400G?
A: OSFP and QSFP-DD are both 400G form factors but are not mechanically interchangeable due to different physical dimensions. The H-O400-4Q100-1M uses the OSFP form factor on the 400G end. Both form factors can interoperate electrically when using appropriate breakout or direct cables.

Q: Can this cable connect 400G switches to 100G servers or devices?
A: Yes, this breakout cable is designed specifically for connecting a single 400G OSFP port to four separate 100G QSFP28 ports, making it ideal for connecting 400G spine switches to 100G leaf switches, servers, or storage arrays in data center architectures.

Q: What are the advantages of active copper cables over passive DAC?
A: Active copper cables include signal conditioning electronics that enable longer reach and better signal integrity compared to passive DAC. They also consume less power and cost less than optical transceivers with fiber, making them ideal for short-reach data center connections up to 5 meters.

Q: Is this cable compatible with other vendors' 400G OSFP and 100G QSFP28 equipment?
A: While designed for Arista switches, the cable uses industry-standard 400GBASE-CR8 and 100GBASE-CR4 signaling. Compatibility with other vendors depends on their support for multi-vendor optics and cables. Always verify compatibility with your specific equipment before deployment.

Q: What warranty coverage does Arista provide for this cable?
A: Arista optics and cables include a one-year limited hardware warranty covering parts, repair, or replacement with a 10 business day turnaround. Extended support services including next business day and 4-hour advance replacement are available as optional upgrades.