While optical Thunderbolt cables do exist, they are a niche product. Most Thunderbolt cables in existence is comprised of good old metal wires. https://www.cor

While optical Thunderbolt cables do exist, they are a niche product. Most Thunderbolt cables in existence is comprised of good old metal wires. https://www.corning.com/optical-cables-by-corning/worldwide/en/products/thunderbolt-optical-cables.html https://www.corning.com/optical-cables-by-corning/worldwide/...