Arista CAB-S-S-25G-1.5 | 25G SFP28 Passive DAC Twinax Cable, 1.5m

Q: What is the maximum data rate supported by this cable?
A: The CAB-S-S-25G-1.5 supports data rates up to 25.78 Gbps for 25G Ethernet and is backward compatible with 10.31 Gbps for 10G Ethernet applications.

Q: Can this cable be used with switches from other vendors?
A: While this cable is programmed for Arista compatibility, passive DAC cables are typically vendor-neutral at the physical layer. However, proper EEPROM encoding is required for optimal compatibility and monitoring functions on Arista platforms.

Q: What is the typical use case for this 1.5m cable length?
A: This cable length is ideal for short-reach data centre applications such as top-of-rack switch-to-server connections, adjacently racked switch-to-switch links, and compact high-density networking environments where devices are in close proximity.

Q: Does this cable require any licensing or special configuration?
A: No, passive DAC cables do not require licensing. They are plug-and-play solutions that are automatically detected by the switch once installed in compatible SFP28 ports.

Q: What is the power consumption advantage of passive DAC over optical transceivers?
A: Passive DAC cables consume significantly less power than optical transceivers—approximately 0.57W per end compared to 1.5W for optical SFP28 modules—making them a cost-effective and energy-efficient choice for short-distance connections.