[Elecraft] K3S USB port

[Bill]

On the K3, the serial port is perfect - for use with either a real 
serial port or a USB adapter.  I prefer going direct to a real serial 
port, without any adapter.

Is the USB in the K3S merely a built-in adapter? That would eliminate a 
problem some ops have had with external adapters (Prolific??).

Bill W2BLC K-Line