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.
As with all medical procedures, there are some risks. The most common problems after placing a port are: Bleeding: Bleeding is usually minor and does not last long. Infection right after the port is placed: There is a small risk of infection right after the port is placed. Infection more than 1 week after the port is placed: This infection is more common. It is not related to the port placement procedure.