[LeoPanthera]

I bought a gadget from eBay that does this. You plug both ends of the cable into it and it tells you what's inside the cable.

It doesn't look like it's made anymore but there are similar gadgets still on eBay.

[kube-system]

Do you have a link to one of them? I am having trouble finding anything that looks like this.

[LeoPanthera]

Here's one. You can buy from Tindie or there are some on eBay too, although they might be clones. https://www.tindie.com/products/petl/usb-c-cable-tester-c2c-...

[ThePowerOfFuet]

https://aliexpress.com/item/1005002835878171.html

[LeoPanthera]

That's not the same thing at all. That measures power flowing through a USB cable, which is still useful, but doesn't tell you anything about the capabilities of the cable.

[ThePowerOfFuet]

Look more closely at the pictures, all of them.