And laptops below the 100W charging mark will need to include at least one port capable of charging. Thunderbolt 4 will also work with cables that measure up to two meters, with longer support expected in the future. If you have a desktop setup, you'll be able to pull your PC out of hibernation just by touching the accessories. The best Thunderbolt 4 docking stations add support for up to three downstream Thunderbolt 4 ports, and it adds Direct Memory Access (DMA) protection via Intel's Virtualization Technology for Directed I/O (VT-d) to help deal with threats. This extra bandwidth will also help anyone who uses an external GPU to turn their Ultrabook into a gaming machine. If you often use removable storage - like something from our best external hard drive collection - you should see theoretical transfer speeds up to about 3,000MB/s with Thunderbolt 4. There's also double the amount of PCIe bandwidth required, bumping Thunderbolt 4 up to 32Gbps from Thunderbolt 3's 16Gbps.

Thunderbolt 4 takes things to the next level with a new set of minimum performance requirements for video support, PCIe bandwidth, and more.

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