Well I tried the sainsmart 2in1 board. couldnt even get it to upload the firmware. had to download official ftdi drivers. Still no go. Read in the products description that the board is sold with an old bootloader and one needed to use arduino IDE older than 1.0.5 – ie 1.0.5 which is extremely ancient compared to current version 1.8.1. Tried to flash with ide 1.0.4 and still timed out on the upload.
JUST DROPPED IT IN THE UPS RETURN BOX.