1. What is a Thunderbolt 4 port?
A Thunderbolt 4 port looks a lot like a USB-C port, USB-C is the name of this physical port type, and Thunderbolt 4 is a protocol. Or in other words, a Thunderbolt 4 port is a USB-C port with the Thunderbolt 4 protocol.
2.Features of Thunderbolt 4
Screen Expansion: Mirror or expand your display to 2 monitors in up to 4K, or up to 8K to a single monitor.
Charging Power: Provide up to 100W charging power from a single port.
Data Transfer: Supports a PCIe data transfer speed of 32 Gbps.
Support Wake From Sleep: Thunderbolt 4 lets users wake up their laptop using an external keyboard or mouse that's connected via the Thunderbolt 4 port.
Security: Thunderbolt 4 provides Direct Memory Access (DMA) protection. It is based on Intel VT-d's DMA attack* protection, which can physically prevent DMA attacks. Although this level of protection is probably overkill for ordinary users, it can prevent malicious devices from using DMA to steal information from enterprises and users with extremely high data-confidentiality requirements.
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