Review on SMAKN® Utility Arduino STM32F103R8T6 Development by Jason Cox

This device does not have drivers that work with current versions of Windows such as Windows 10. I contacted them and they could not provide them. Just the old ones that didn't work either. Because it can't be programmed and there's no support site or site to download drivers or documentation, it's as useful as a brick. I wasted my money.