ThinkPad X1 Carbon 6th 20KH006QAU With its stunning, new look, the ultralight ThinkPad X1 Carbon merges elegant design, seamless responsiveness, and legendary durability to create the ultimate in mobile productivity. Includes Intel Thunderbolt 3 - the technology that brings lightning-fast Thunderbolt to USB-C at speeds up to 40 Gbps. Connect a cable from your USB-C port to a Thunderbolt 3-enabled device, and get four times the data and twice the video bandwidth of any other port type, while also supplying power.