The serial interface or serial port, also known as RS-232 is a communication port used to connect modems, mouses, some printers, scanners and other hardware equipment.

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What (traditional) modems work with Windows Vista 64-bit or Windows 7 64-bit?

I have a US Robotics v.Everything modem that I occasionally used for fax and Internet dial-in backup access. However, that modem connected to my previous PC using a plain RS-232 9-pin serial port. ...
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Is DB-25 port Serial or Parallel?

I would like to know whether the DB-25 port is a serial or parallel port. These ports are otherwise known as printer ports, aka LPT port. I'm very confused about this since, according to Wikipedia, ...
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How do I clean up COM ports in use?

How do I clean-up these in-use COM ports? The COM port numbers always seem to be taken up by something and although right now I only have 4 serial ports (3 over Bluetooth and one USB to RS-232), I ...
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Any free application to redirect serial communication to TCP/IP? [closed]

Please can anyone suggest a free application which creates virtual serial ports and any traffic on that port is redirected to given TCP/IP address?
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How do I know which /dev/ttyS* is my serial port?

I have a laptop which has only one serial port. I went into: /dev directory, and I found: ttyS0 ttyS1 ttyS2 ttyS3 How do I know which of those "ttyS" refers to my serial port?
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How can I monitor a virtual serial port in Windows 7?

I need to listen to everything that goes (both directions) through a virtual serial port on Windows 7 64bit. I do not need to send anything, just monitor the communication for debugging purposes. ...
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RS232 Packet Sniffer

I'm working on a software development project that requires me to send signals to a device via RS232 port. Sadly the included utilities for transferring to and from the device would not work for mass ...
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Is it possible to reset FTDI virtual com ports enumeration, we easily get hundreds of COM ports in production environment

I have also asked this on serverfault but perhaps it is better suited to be asked here? I hope I'm not breaking any etiquette. When producing devices that use a FTDI USB to serial chip to ...
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How to use IrDA adapter as serial port?

I remember back in windows 98 era that you could install IrDA adapter and associate serial port with it so it would work just like rs-232 to infra-red adapter. Is such thing possible on windows 7? Is ...
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1answer
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I'm looking for serial port monitoring software [closed]

I need a serial port monitoring software that works on windows 7 64bit or GNU/Linux and supports at least RS-232. Bonus points are if it's free software or at least freeware. I just need to be able to ...
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1answer
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How can I send data to the serial port from a Linux shell?

I need to find the linux way of running the following DOS commands: MODE COM1: 9600,N,8,1,P COPY FIRMWARE.COD COM1 Is this possible? I know COM1 in Linux is /dev/ttyS0 but that's about it. How do ...
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If I plug a two serial devices into usb adapters both into a single USB hub will my computer see two different COM ports?

Hopefully a simple question but I couldn't quite find the answer myself. I'm writing a program in C++ that will, among other things, need to control two devices that are run by serial port. This ...
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Ubuntu: Write to serial port: permission denied

I've connected a USB to Serial bridge dongle, and running dmesg | grep tty outputted the following: [ 0.000000] console [tty0] enabled [603199.380677] usb 2-2: cp210x converter now attached to ...
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Is there a free way to monitor a serial port on Windows 7 x64? [closed]

The title questions pretty much says it all. I've looked around quite a bit, but I have yet to find a free way to monitor a serial port (without opening or blocking it from other applications), that ...
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2answers
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Gigaware USB to serial adapter not working on Windows 8

I'm trying to use a Gigaware USB to serial adapter on my new computer. It worked fine with Windows Vista and XP, but not on Windows 8. It's not working and I get this message under device properties ...
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Setting up a virtual Com Port?

What I need to get to work together: A USB barcode scanner A Windows (7) Machine A piece of software that listens for data over a COM port So I believe I need a way to make USB device appear to be ...
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1answer
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Seeking 9-bit serial port card for Windows PC [closed]

I need to connect to serial port on a system bus which uses 9 data bits. Is there an off the shelf card which will handle that? Obviously it would need to come with driver software to return 9 (...
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1answer
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Serial connection between 2 computers

I recently purchased a USB to serial cable to connect to other desktop computers (reason is for headless servers), and I don't know if it is working right or I am just doing something wrong. The USB ...
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1answer
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Serial ports COM3-COM49 used, but not listed in device manager

Some piece of software or some driver appears to be using the serial ports COM3-COM49. New COM ports for Bluetooth et al get assigned ridiculous numbers over 50. When I try to change the number, ...
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2answers
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Serial Over IP, windows-linux [closed]

I need to have a serial port "shared" over the Internet (may or may not be using a VPN). At one end is a Windows box, and at the other is a Linux box, which has the serial port The Linux box has no ...
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1answer
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How to transmit single Hex value serial data in Putty using alt code?

I am trying to sent a specific hex value across a serial COM port using Putty. Specifically, I want to send the hex codes 9C, B6, FC, and 8B. I have looked up the alt codes for these and they are ...