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

Q: What network equipment is this cable compatible with?
A: This passive DAC cable is designed for use with any network switch, router, or server featuring SFP28 ports that support 25GBASE-CR. It is fully compatible with Arista switches and interoperable with other vendors' equipment supporting the SFP28 MSA standard.

Q: Can this cable support 10G Ethernet as well as 25G?
A: Yes, the CAB-S-S-25G-1.5M supports dual-rate operation at both 25Gbps (25G Ethernet) and 10Gbps (10G Ethernet), providing flexibility for mixed-speed deployments and backward compatibility with 10G SFP+ infrastructure.

Q: What are the advantages of using a DAC cable over optical transceivers?
A: Passive DAC cables offer several advantages for short-reach connections: significantly lower cost, reduced power consumption (no optics or lasers required), simplified installation with integrated connectors, and reliable performance for rack-to-rack or intra-rack connectivity up to 5 meters.

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

Q: Does this cable require any special licensing or configuration?
A: No special licensing is required. The cable is hot-pluggable and includes EEPROM information that allows the host switch or router to automatically recognize and configure the connection. Simply insert both ends into compatible SFP28 ports.