ALLNET 25G SFP28 Direct Attach Copper Cable, 5m, Passive Twinax, 25GbE, Data Center ALL4779-5

25 Gbit/s over a 5-meter passive copper twinax assembly with SFP28 connectors at both ends. The ALLNET ALL4779-5 DAC is a direct attach cable for 25 Gigabit Ethernet links in racks and across adjacent cabinets, consuming no transceiver power and adding near-zero latency.

Overview

The ALL4779-5 is a 5-meter Direct Attach Copper (DAC) cable terminated with SFP28 connectors on both ends. It provides a 25 Gbit/s link for 25GbE switch-to-server or switch-to-switch connections. As a passive twinax assembly, it draws no power from the port and introduces no signal regeneration delay, making it suitable for short-reach, high-density deployments.

What stands out

• 25 Gbit/s data transfer rate per IEEE 802.3by
• Passive design: ultra-low power consumption, no heat from transceivers
• SFP28 connectors on both ends, hot-pluggable
• MSA compliant to SFF-8402 for multi-vendor interoperability
• 5-meter reach for flexible rack and row cabling

Technical details

• Cable type: Direct Attach Copper (DAC), passive twinax
• Data rate: 25 Gbit/s
• Connectors: SFP28 to SFP28
• Length: 5 m
• Network standard: 25 Gigabit Ethernet (25GbE)
• Compliance: SFF-8402 MSA, IEEE 802.3by
• Material: Copper
• Application: Data centers, enterprise networks, HPC

Our verdict

A straightforward, standards-based 25G DAC for short links where optical transceivers are unnecessary. The passive design keeps power and latency at zero, and the 5-meter length covers most top-of-rack and end-of-row needs.