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Thunderbolt and USB-C: Understanding the Differences in Apple Ports
Key points
- USB-C is a connector shape, Thunderbolt is a standard.
- All modern Thunderbolt ports use USB-C, but not all USB-C ports are Thunderbolt.
- Thunderbolt guarantees higher minimum speeds and features than USB-C.
- Thunderbolt 5 offers up to 120 Gbps in one direction and supports multiple 4K monitors.
USB-C vs. Thunderbolt: The Core Distinction
USB-C refers to the physical shape of a port and connector. Thunderbolt, on the other hand, is a data transfer standard that adopted the USB-C connector for its modern iterations. This means that while all Thunderbolt ports on current Macs are USB-C, not all USB-C ports support Thunderbolt capabilities.
Varying Speeds and Capabilities
The primary difference between Thunderbolt and standard USB-C ports is speed. Standard USB-C ports can range from 480 Mbps (USB 2) to 80 Gbps (USB4 Version 2.0). Thunderbolt 4 offers 40 Gbps, and Thunderbolt 5 provides 80 Gbps, with up to 120 Gbps in one direction. While USB4 Version 2.0 can match Thunderbolt 5's top speed, manufacturers can implement USB4 at a slower 20 Gbps, whereas Thunderbolt 5 ports must support 80 Gbps.
For example, transferring a 500GB file would take approximately seven minutes on a MacBook Neo's USB 3 port, but less than a minute with Thunderbolt 5 on a MacBook Pro M5 Max.
Guaranteed Features and Monitor Support
Another significant difference is the guarantee of features. With various non-Thunderbolt USB generations, the specific capabilities of a USB-C port, such as speed tiers and DisplayPort Alt Mode, can be inconsistent. Thunderbolt, however, ensures a baseline of performance and features. Thunderbolt 5 ports can support up to three 4K monitors through a single port, a capability not universally guaranteed by standard USB-C ports.
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Reporting from
This article clarifies the distinction between Thunderbolt and USB-C, explaining that USB-C defines the connector shape while Thunderbolt is a data transfer standard that utilizes the USB-C connector. The key differences lie in speed, guaranteed features, and external monitor support, with Thunderbolt offering higher minimum performance guarantees.