I have an arduino Pro Mini 3V3 on order, but I already have a TTL-232R-3V3 from a previous project. However I haven't used it
for some time and have reinstalled Windows XP Pro on my PC since then. I have let windows install the driver it found on the net as I
do not have the driver CD for the cable. I have noticed that pin 3, (VCC) out of the cable is measuring 4.8volts when I am expecting it to be
3.3volts, however other pins are at the correct 3V3 level. Is that expected operation, only in the start-up example for the Pro Mini, here :http://arduino.cc/en/Guide/ArduinoProMini
it is showing VCC from the cable supplying power to the Pro Mini.
Is it that ~5V is supplied to the Pro Mini, which has its own 3V3 regulator on-board?