What does ttyUSB mean? Sometimes, the embedded microcontroller does not come with a hardware USB interface. While it is possible to use a software-only USB stack, the additional constraints put onto the CPU and the usually small storage size often lead board designers to include a dedicated UART to USB bridge.
Because of a busy weekend I didn't really follow up other than via emails and this still hasn't been resolved. The consistent word from them was that porting a number sometimes takes 24 to 48 hours.. I spoke to a rep by phone today who promised it would be done within 2 to 4 hours.. It wasn't.
You can ship it back to us within 7 days and get a full refund. Return Process: Just email us your complaint with order number within 7 days of receipt of the product. You can also login to your account and raise a dispute from there. We will pickup up the product from your doorstep if the pincode is serviceable. In case we canât pickup, our team will reply to you with an email, containing instructions and return shipping address to which you need to send back the product within 10 days.