This thing is amazing. Before, we were buying and using multiple Drok usb ammeters, which cost about $10 each. In addition, we’d need to buy a multi-port usb charger. With this thing, you have six usb ammeters all bundled into one unit. The cables are all located on the right side and the lcd is easily readable on the left side. Amp draw goes up to 3A, I think. Throw away the Droks and get this thing.