Interpreting the results?

[grymoire]

If a signal is missing, I'm not sure I can tell that there is a problem. It would be nice to have a chart that shows/lists the LED's that are suppose to be on for certain cable types.

[grymoire]

A similar product has a manual, and includes a helpful guide.
C2C-caberQU PDF

Here's what page 7 shows

USB Power Delivery

• Option A: VBUS | GND | CC1 | Shield
• Option B: VBUS | GND | CC2 | Shield

USB 2.0/1.1

• Option A: VBUS | GND | D+ | D- | Shield

USB 3.0/3.1/3.2/4

• Single lane (3.0/3.1)
  -- Option A: VBUS | GND | TX1+ | RX1+ | TX1- | RX1- | Shield
  -- Option B: VBUS | GND | TX2+ | RX2+ | TX2- | RX2- | Shield
• Dual lane (3.2/4)
  -- Option A: VBUS | GND | TX1+ | RX1+ | TX1- | RX1- | TX2+ | RX2+ | TX2- | RX2- | Shield

Debug Accessory Mode

• Option A: VBUS | GND | D+ | D-| CC1 | SBU1 | TX1+ | RX1+ | TX1- | RX1- | Shield
• Option B: VBUS | GND | D+ | D-| CC2 | SBU2 | TX2+ | RX2+ | TX2- | RX2- | Shield

Alternate Mode

• Option A: VBUS | GND | TX1+ | RX1+ | TX1- | RX1- | Shield
• Option B: VBUS | GND | TX2+ | RX2+ | TX2- | RX2- | Shield

Audio Adapter Accessory Mode

• Option A: GND | CC1 | CC2 | SBU1 | SBU2 | D+ | D- | Shield
  VBUS is optional for concurrent charging of a device.

[NSExceptional]

It's a shame the author hasn't responded. Is that chart enough for a lowly coder to use to organize his USB cables in your opinion, @grymoire?

[ejl371]

Wikipedia tells you what pair does and what modes it is used in. https://en.wikipedia.org/wiki/USB-C. The author is amazingly responsive when I reached out to ask about another issue. Which coincidentally someone else opened the same day (issue 18).

[anyconhhv]

I gathered all of my cables and tested them. I then attached a label to each with the type of USB. And then if a cable doesn't work, I try a cable with more connections. There is an amazing number of variations in type and price, especially in USB-C cables. I have photos of a couble that might help.

This first one was an expensive cable - All lines are on exzcept for D+/D- on one side, but if you flip the USB3 cable over, the D+/D- on the other side lights up.

Now here's cable #2. I am not sure how this cable was classified. Note that how I plug it in, there are three different combination of light patterns.

Now flipping over the USB-C, note how TX2/RX2 become TX1/RX1

And now plugging into the green USB2 port instead of the blue USB3 port, we just get VBus/Gnd and D+/D-. Note we have 2 sets of Gnd/VBUS/

Here's a USB-C to USB-C cable I use for fast charging. Note it has two sets of VBus/Gnd and D+/D-, but there is also a CC2 light. If I flip the cable over, CC2 on the left changes to CC1 on the right.

And finally - a plain, ordinary USB2 data cables - with one set of VBus, ground and D+/D-.

[grymoire]

Oops. I submitted the above info on my other account. I'm also anyconhhv