CPO Raises PCB Downgrade Concerns but Switches Stick With M8 CCL

The spread of co-packaged optics (CPO) in optical interconnects may reduce high-speed transmission requirements on AI server motherboards, raising concerns about PCB downgrades. Switch makers, however, remain committed to M8 CCL material for now.

• CPO reduces reliance on copper connections in AI servers
• Concerns focus on downgrading of printed circuit boards
• Switch makers still use M8 CCL for now