Thunderbolt 5 is a high-speed connectivity protocol that offers bidirectional data transfer speeds of up to 80 Gbps and supports up to 120 Gbps with Bandwidth Boost. It integrates PCI Express Gen 4 for external SSD performance, supports multiple high-definition monitors, and provides up to 240W of power delivery through USB-C PD 3.1, making it suitable for professional applications like 8K video editing and gaming with external GPUs[1][5].