Arista unveils XPO 12.8Tbps liquid-cooled optics for AI

Arista Networks has announced the formation of a multi-source agreement (MSA) for XPO, a 12.8 Tbps liquid-cooled pluggable optics module designed for AI networking.

• Main announcement: Arista announced the XPO MSA providing 12.8 Tbps per pluggable module, 204.8 Tbps per OCP rack unit front-panel density, an integrated cold plate capable of cooling up to 400W per module, and support for standards including DR, FR, LR, SR, ZR/ZR+, coherent-lite, slow&wide, copper, and RF-Microwave; the MSA will debut at OFC 2026 with live demos at Arista booth 1571 and information on how to join available at https://www.xpomsa.com/.
• Background and logistics: The announcement includes endorsements from Microsoft and Dell’Oro Group; Arista published supporting materials (whitepaper, executive blog, video) and will host a webinar titled “The Next Generation of Pluggable Optics for AI Networking” on April 2; additional resources: whitepaper, video, blog and event pages cited in the release.