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Thunderbolt vs USB C

Is Thunderbolt the same as USB-C?

USB-C and Thunderbolt 3, 4, & 5 are frequently confused because they both utilize the same oval shape USB C connector, but they are distinct technologies with different capabilities and features. Understanding the key differences between USB-C and Thunderbolt is essential for making informed decisions about which technology best suits your needs. This guide, created by Newnex, one of the trusted leaders in USB and connectivity solutions, will help you navigate the functionalities, speeds, and use cases of USB-C and Thunderbolt, ensuring you choose the right connection for your devices.

Note that only Thunderbolt 3, 4, & 5 adapt the USB C connector, whereas earlier versions, Thunderbolt 1 and 2 adapted the Mini DisplayPort connector.

Thunderbolt vs USB C comparison

Feature USB-C Thunderbolt 3 / 4 / 5
Connector Type USB-C is a physical connector used across USB 2.0, 3.x, and USB4 standards. Thunderbolt 3/4/5 also use the USB-C connector.
Data Transfer Speed USB 2.0: 480 Mbps
USB 3.0: 5 Gbps
USB 3.1: 10 Gbps
USB 3.2: 20 Gbps
USB4: 40 Gbps
USB4 v2: 80–120 Gbps 		TB 3: 40 Gbps
TB 4: 40 Gbps (with stricter specs)
TB 5: 80–120 Gbps
Power Delivery Supports up to 240W via USB Power Delivery (USB PD 3.1). Supports up to 240W via USB PD 3.1.
Video Display Output DP Alt Mode via USB-C:
– 2-lane: 1x 4K or 2x 2K
– 4-lane: 1x 8K or 2x 4K
– HDMI via adapter 		Native Thunderbolt + DP support:
– TB 3: 2x 4K or 1x 5K
– TB 4: 2x 4K or 1x 8K
– TB 5: 2x 8K or 1x 16K

High-Performance USB-C Cables Compatible with Thunderbolt 3, 4 & 5

Newnex’s USB4 cables are engineered for high-speed performance and broad compatibility. Fully compliant with USB4 standards, they also support Thunderbolt 3, 4, and the latest Thunderbolt 5 ports—ensuring seamless data, video, and power delivery across a wide range of modern devices.

Thunderbolt USB-C 40Gbps Active Cable
Active USB4 Cables

4-meter (13.1 ft.) USB-C active cable that supports USB4 data transfer rate of up to 40Gbps

USB 4 40Gbps Thunderbolt USB C Cable
Passive USB4 Cables

Supports 80Gbps data, 240W power, and Display Alt-mode

FAQ

Thunderbolt 3, 4, & 5 ports on computer host are compatible with all USB4, 3.2, 3.1, 3.0, and 2.0 cables and peripherals and running at the speed of the respective USB data speed. Be aware that some TB 3/4/5 ports on peripherals only support Thunderbolt data.

Some docks might downgrade to USB mode when using a USB-C cable. To achieve the full function, you must use a Thunderbolt cable to connect from the Thunderbolt port of the computer to a Thunderbolt dock station.

Most passive Thunderbolt 3, 4, & 5 cables are compatible with USB4, 3.2, 3.1, 3.0, and 2.0. However, some TB3 active optical cables are not compatible with USB protocols.

Yes, all Thunderbolt 3, 4, & 5 ports should support USB Power Delivery at minimum of 100W according to the standard. You can use USB PD compliant charger and cable to charge through any TB 3/4/5 port on your laptop.

Devices that support Thunderbolt 3, 4, & 5 typically have a Thunderbolt symbol (a lightning bolt) near the USB-C port.

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