Review on USAMS 2Pack Multi Charging Cable - 10ft/3m Long Nylon Braided 4 in 1 USB Charge Cord for Phone, Galaxy S9/S8/S7 and More by John Larsen

First of all I'm an engineer and college professor so I know what I'm doing. I have connected this cable to several QC 3.0 fast charge adapters and it will NOT fast charge. After answering questions I thought it was the charger and not the cable, but after a few experiments with different devices and chargers I came to the conclusion that this cable does not charge fast and is probably too long and subject to significant voltage drop. The 4ft version of this cable claims to be a fast charger but I doubt it. Also LEDs don't work as far as I can tell. They basically just light up all the time when the cable is connected to the charger and DO NOT indicate if it is connected to the device or not.