Arista 400GBASE-CR8 OSFP to OSFP Twinax Copper Cable, 3 m

At 3 m, the Arista CAB-O-O-400G-3M is a roomier copper option for OSFP ports. It is a 400GBASE-CR8 twinax cable with OSFP connectors at both ends, carrying 400GbE.

Choose it for runs that need some extra distance, such as devices in adjacent racks. Check the path first; a fixed-length copper cable cannot be extended, so a route that comes out longer than 3 m means a different part. Allow for strain relief at both ends.

Copper twinax avoids separate optical modules, so the whole link is one part per connection. Make sure both devices use OSFP cages, since the connector will not fit other formats. The cable is offered in new and refurbished condition. Both list a choice of 1 year or 3 years of warranty.