USB4 is a Glorious Mess

USB4 is presented here as a wide, sometimes messy convergence point for multiple standards, with Linus focusing on what USB4 actually is, how it relates to Thunderbolt 3 and Thunderbolt 4, and where the ground rules and expectations differ across platforms. The host breaks down USB4 as an open version of Thunderbolt 3, explaining the key advantages like high data rates, daisy-chaining, and PCIe tunneling, while also highlighting the potential for corner cases and short cuts in implementation. The video includes practical demonstrations with a Corsair Voyager a1600 laptop, testing USB4 ports with Thunderbolt 3 and Thunderbolt 4 devices, cables, and docks, to show where compatibility holds and where it does not. The narrative emphasizes that real-world results depend heavily on the quality of implementation, particularly in cables, hubs, and devices, and it compares different ecosystems, notably Apple Mac with Thunderbolt behavior versus Windows and Corsair hardware. Throughout, the host discusses the motivation behind USB4’s design choices in light of vendor certification, consumer usage patterns, and the trade-offs that come with open standards that aim to be universal but end up being selectively feature-rich. The overall takeaway is that USB4 can deliver impressive performance when implemented well, but it is not a single universal experience, and buyers should pay attention to cables, hubs, and claimed features to avoid disappointing results. The video ends with a reflection on the broader implications for devices like phones and the market dynamics around USB4 adoption in consumer hardware.

Topics · technology · hardware · consumer_electronics · computing_platforms