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Dell Latitude 7390 Owner's Manual

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Thunderbolt over USB Type-C

Thunderbolt is a hardware interface that combines data, video, audio, and power in a single connection. Thunderbolt combines PCI Express (PCIe) and DisplayPort (DP) into one serial signal, and additionally provides DC power, all in one cable. Thunderbolt 1 and Thunderbolt 2 use the same connector [1] as miniDP (DisplayPort) to connect to peripherals, while Thunderbolt 3 uses a USB Type-C connector [2].
Figure 1. Thunderbolt 1 and Thunderbolt 3Displays Thunderbolt 1 and Thunderbolt 3
  1. Thunderbolt 1 and Thunderbolt 2 (using a miniDP connector)
  2. Thunderbolt 3 (using a USB Type-C connector)

Thunderbolt 3 over USB Type-C

Thunderbolt 3 brings Thunderbolt to USB Type-C at speeds up to 40 Gbps, creating one compact port that does it all - delivering the fastest, most versatile connection to any dock, display or data device like an external hard drive. Thunderbolt 3 uses a USB Type-C connector/port to connect to supported peripherals.
  1. Thunderbolt 3 uses USB Type-C connector and cables - It is compact and reversible
  2. Thunderbolt 3 supports speed up to 40 Gbps
  3. DisplayPort 1.2 – compatible with existing DisplayPort monitors, devices and cables
  4. USB Power Delivery - Up to 130W on supported computers

Key Features of Thunderbolt 3 over USB Type-C

  1. Thunderbolt, USB, DisplayPort and power on USB Type-C on a single cable (features vary between different products)
  2. USB Type-C connector and cables which are compact and reversible
  3. Supports Thunderbolt Networking (*varies between different products)
  4. Supports up to 4K displays
  5. Up to 40 Gbps
  • NOTE: Data transfer speed may vary between different devices.

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