Arista CAB-S-S-25G-2M-Arista | 25G SFP28 Passive DAC Cable, 2m

Q: What is the difference between passive and active DAC cables?
A: Passive DAC cables like the CAB-S-S-25G-2M use copper conductors without signal amplification, making them more power-efficient and cost-effective for shorter distances up to 5 meters. They consume less than 0.6W per end compared to active cables or optical transceivers, making them ideal for rack-to-rack connections in data centres.

Q: Is this cable compatible with 10G SFP+ ports?
A: Yes, the CAB-S-S-25G-2M supports dual-rate operation and can function at 10G speeds when connected to compatible 10G SFP+ ports on Arista switches, providing investment protection and flexible deployment options.

Q: Can I use this cable with non-Arista equipment?
A: While this cable is programmed for Arista Networks equipment, 25G SFP28 DAC cables are generally interoperable with other vendors' equipment that supports industry-standard SFP28 connectors and 25GBase-CU specifications. However, compatibility should be verified with the specific switch manufacturer.

Q: What is the maximum distance for 25G passive DAC cables?
A: Passive 25G SFP28 DAC cables are typically available in lengths up to 5 meters. For longer distances beyond 5 meters, active optical cables (AOCs) or fibre optic transceivers with appropriate cabling should be used.

Q: Does this cable require any special configuration?
A: No, the CAB-S-S-25G-2M is a plug-and-play solution with pre-programmed EEPROM that is automatically recognized by Arista switches. Simply insert the connectors into compatible SFP28 ports and the link will establish automatically.