buffered rs-232 cable for IQUE-M5?

[ptig185]

Hi,
Does anyone know how I can safely buffer my rs-232 I/O on my M5?
Does it require a FM-FM USB adapter
and a USB-rs232 adapter-cable?
I've read of the rs-232 pins in the car adapter but I'd rather buffer it and hopefully protect the M5.

[ptig185]

In the posting by AKlopper it appears that there may be some current limiting resistors in the cradle. Not sure which cradle that is though. I have both the Auto cradle and USB sync cradle.

AKlopper: could you tell me which one that is you posted a picture of?

[AKlopper]

It was the USB sync cradle. The board in the auto cradle is identical. The connector is just soldered onto the first 4 pins.

[ptig185]

OK,

Thanks!