A Google engineer spent months reviewing bad USB cables on Amazon until he forced the site to ban them
Melia Robinson/Tech Insider
Google engineer Benson Leung noticed that Amazon changed its rules to prohibit the sale of USB-C cables that don't comply with standards for the cables. Basically it's banning the sale of bad USB cables that don't work.
Leung has spent months reviewing USB-C cables on Amazon. He's bought and tested hundreds of devices to determine whether they meet the USB-C standard. He found that many cables didn't, which caused issues charging certain devices and transferring data.
Here's part of one of Leung's USB cable reviews:
Benson here again, reviewing legacy USB Type-C cable on Amazon. Today I am reviewing SAWAKE's "USB 3.1 Type C Male Data Charging Cable Woven Mesh Cable Strong Braided". I bought this cable to use various USB Type-A chargers with the Chromebook Pixel and to do data syncing with Pixel C, and I found that this cable does not work to charge the Chromebook Pixel, or sync data to Pixel C.
Upon closer inspection, this cable does NOT comply with the USB Type-C specification version 1.1. The documentation can be found at usb.org under developers/usbtypec.
Specifically, these cables do not charge the Chromebook Pixel 2015 because the cable leaves the CC lines floating, where the specification requires a Rp pullup to Vbus to identify the cable as a legacy cable. Both pixel devices use the CC pullup to detect when a host has been attached. Since this cable has no CC pullup, neither device correctly charges or hooks up the data lines.
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