Thunderbolt 4 interface, the English name is Thunderbolt 4. Thunderbolt technology is a connection interface mainly developed by Intel, which integrates PCI Express data transmission and DisplayPort display technology, and can transmit data and video signals at the same time. It has been widely used in PCs, external monitors, graphics cards, expansion docks, etc.

　　As the latest iteration of the Thunderbolt 4 interface, the total data transmission speed can reach up to 40Gbps. The minimum PCIe data requirement has been increased from 16Gbps to 32Gbps, which means that data can be moved into or removed from external storage more quickly, which speeds up the efficiency of file transfer in the workplace and makes the office super efficient. It can support two 4K monitors or one 8K monitor externally at the same time, whether it is browsing a large amount of calculation data at the same time, or reviewing year-end reports on multiple screens, the expansion needs can be met.

　　The Thunderbolt 4 interface can not only supply power to compatible devices at the same time, but also reverse charge. Adopt the increasingly popular Type-C interface protocol, so external graphics cards, daily network cables, earphones, keyboards, mice, etc., as long as they are devices that support Thunderbolt, the Thunderbolt 4 interface can be compatible, providing a great solution for mobile office and business trips convenient.

　　Moreover, the Intel VT-d-based direct memory access (DMA) protection has been added to the Thunderbolt 4 interface certification, so as to avoid physical DMA attacks and improve security to a certain extent.