Thunderbolt. The Thunderbolt standard (formerly called Light Peak) is aimed at being able to use a single interface for multiple device connections. Thunderbolt is a 10Gbps (1.25GBps) interface that combines PCI-E (Peripheral Component Interconnect Express) with DisplayPort in a single, thin cable. It can daisy-chain compatible devices, and it supports hubs, which lets you use a single cable connection to link your computer to a mouse, keyboard, monitor, and external storage drive. Even data from an external RAID (redundant array of independent drives) array of SSDs wouldn’t hit a bottleneck on its way to your computer, thanks to Thunderbolt.
Thunderbolt doesn’t use optical technologies such as lasers or fiber to transmit data. Like other standards described here, it sends data through copper wires. Thunderbolt uses mini-DisplayPort connectors, and it’s adaptable to DisplayPort, HDMI, DVI, VGA, and more.