Technically speaking, Windows does not automatically detect hardware plugged into serial ports, like COMs. You would need to setup the drivers from the add hardware wizard for the device so windows can see and use it. Do you have drivers for the card reader? What make and model of card reader is it? Poor righteous teachers black business. If you connect say a serial mouse to that port can it be used?
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---------------------------------- Phil AKA Vacunita ---------------------------------- Ignorance is not necessarily Bliss, case in point: Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown. Behind the Web, Tips and Tricks for Web Development. RE: How yo check if Serial Port ( COM 1) working (TechnicalUser) 28 Jun 11 15:18. You basically short pins 2&3 on the serial port connection then pull up hyperterm, tell it to use the port and anything you type should show up on the screen. That covers the transmit and receive. There are also some handshake issues but if R/W is good you will at least be at a starting point. Pins 2&3 are on the 5 pin row, middle (3) and the one to the right of it.