USB-C unifies the physical connector but hides a 250x speed spread across seven protocols, with naming chaos and misleading box cables making selection a trap.
Key Takeaways
Same USB-C port, seven protocols: speeds range from USB 2.0’s 480 Mb/s (unchanged since 2000) to Thunderbolt 5 at the top end.
iPad Pro ships with a box cable 83x slower than the port it connects to; MacBook Neo’s two identical-looking USB-C ports differ by 20x in speed.
USB-IF has renamed the 5 Gb/s tier four times since 2008, making marketing names unreliable for purchasing decisions.
Practical buy recommendation: Apple Thunderbolt 5 cable for Thunderbolt-capable machines; Cable Matters 10 Gbps otherwise.
Hacker News Comment Review
Commenters broadly agree USB-C’s physical consolidation is a genuine win; the real complaint is invisible protocol differentiation, not the connector shape itself.
A top commenter flagged the piece as likely AI-generated without citations; a reply immediately linked a full sources page at randsinrepose.com/guides/usb/sources.html, partially defusing the concern.
Practical consensus: for most use cases USB 2.0 speeds and 5V/1A power are sufficient on any cable; confusion matters most at the high-bandwidth, high-power edge where Thunderbolt and fast charging diverge.
Notable Comments
@luma: Most USB-C cables carry an electronic label with bandwidth info; OSes could surface this instead of leaving users guessing.
