Connecting two 3x6 matrices with a 9-wire USB 3.0 cable.

[wolfv]

I want to connect two 3x6 matrices of a split keyboard, which would require 9 wires (without an I/O expander).
I plan to use a USB 3.0 type A male-to-male cable, plugged into two USB 3.0 type A receptacles.
The receptacles are cut from a donor USB 3.0 cable, and glued to the mount plate.

Wikipedia says USB 3.0 has 9 connectors (wires): https://en.wikipedia.org/wiki/USB_3.0
I purchased a USB 3.0 cable expecting 9 connectors.
Today the cable arrived in the mail, but it only has 4 connectors. Here is the USB 3.0 I purchased:
https://www.aliexpress.com/item/USB-Type-C-Male-to-USB-3-0-Female-Converter-Adapter-OTG-Cable-Cord-for-Huawei/32748369256.html?ws_ab_test=searchweb0_0,searchweb201602_1_10152_10065_10151_10068_10130_10324_10325_10326_10084_10083_10080_10307_10082_10081_10110_10178_10137_10111_10060_10112_10113_10155_10114_10154_10056_10055_10054_10312_10313_10059_10314_100031_10099_10078_10079_10103_10073_10102_10052_10053_10142_10107_10050_10051-10152,searchweb201603_19,ppcSwitch_5&btsid=3740e1e2-0fed-4ccc-82f2-61828d9e98a6&algo_expid=7120991c-85be-4e8e-8daf-7bf2e676d1b2-14&algo_pvid=7120991c-85be-4e8e-8daf-7bf2e676d1b2

Here is the cable cut open:


Is that a fraudulent cable?  Or is there something about the USB 3.0 standard I am not understanding?

[hanya]

Sadly, some comments says it supports only USB 2.0 in the feedback of the cable you purchased. The connector might have additional 5 pins in the back of the four pins but if they are not connected to the cables, they do not work.

[wolfv]

Thanks hanya.  The seller has agreed to refund the money.