In SX Microcontrollers, SX/B Compiler and SX-Key Tool, George Herzog wrote:

Chris,
I really thought everyone was off.  Don't work to hard.

Bean,
From what I recall, several of these USB to serial adapters do not provide all the connections needed to use the SX-Key.  Correct me if this is wrong.

1.  The chip provides all the signals needed
2.  The software drivers are NOT a problem as Parallax provides those for their adapter
3.  The USB port can support RS-232
4.  The problem lies in several manufactures preferring not to connect handshaking and control lines on the RS-232 side.  [I suppose to reduce production costs].

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