fast
For CH559 USB Host to UART Bridge Module
Quick response and great support. when I emailed questions about the device, I usually got the replies either the same day or the next. After ordering and receiving the device, I realized it's a USB host and not able to directly connect to my Windows laptop with common USB cables for uploading firmware. fortunately, with the detail instructions provided by the service support, I was able to build the firmware at the laptop and upload it to the device successfully. I did a quick test with my Apple Mac. the device worked the way I expected.
