25 Gb SFP28 Direct-Attach Cables

The SFP28 direct-attach cables are available to provide the following types of connections:

Single-connection cables provide a 25 Gb bidirectional copper or optical connection between unpopulated SFP28 ports.
Passive copper cable

Active optical cable

These cables are available in lengths from 1 meter to 20 meters and are terminated in connectors that are inserted directly into the SFP., SFP+, or SFP28 cages in place of optical modules.

We recommend enabling Forward Error Correction (FEC) when you use 25 Gb SFP28 direct-attach cables.

25 Gb SFP28 Passive Copper Direct-Attach Cables and 25 Gb SFP28 Active Optical Direct-Attach Cables list the available 25 Gb SFP28 direct-attach cables.

Table 1. 25 Gb SFP28 Passive Copper Direct-Attach Cables
Length	Part number
1 meter	10520
	25G-DACP-SFP1M
	25G-SFP28-TWX-P-0101
3 meters	10521
	25G-DACP-SFP3M
	25G-SFP28-TWX-P-0301
5 meters	10522

Table 2. 25 Gb SFP28 Active Optical Direct-Attach Cables
Length	Part number
10 meters	10530
20 meters	10531

See the Extreme Optics website for hardware compatible with 25 GbSFP28 direct-attach cables.

To connect or disconnect a SFP28 direct-attach cable, refer to Connecting an SFP+ Direct-Attach Cable and Disconnecting an SFP+ Direct-Attach Cable.