com port

The FT232R USB UART driver is the thin but critical layer that turns a USB connector into a reliable serial COM port—and when it fails, development boards, 3D printers, ham radio cables, and other USB‑to‑serial devices can stop talking to Windows entirely. This guide walks through how to install...

I have had a particular Arduino Nano working in my PC for about 13 months. Now it doesn't. When I connect, or unplug it, I hear the Windows "device connected/disconnected" sound. However, it does not show up in Device Manager's Com Ports list. (It used to be Com19) Any ideas how to get it back?

G'day all, If I disable or enable a com port (USB device) via the driver under device manager, the acton performs perfectly provided the port is not open. If the port is already open, I get a message that hardware has changed and that a restart is required. Why the difference, and how can I...

Hello all, I have Samsung Laptop w/win7. Though my USB ports seem working well when I verify "COM and LPT's sub line (communication port (COM4)) in Device Manager I see it is labelled by yellow exclamation mark. In order to resolve it first, I tried to update its drivers and I received the...

Hello, I just added a 3-D scanner to my computer and I get an error message as follows: "Com 1 not ready. Please verify that the port is valid or is not in use by another application." I am in fear that Com 1 is my Printer, and I do not want to disconnect it. I know that two devices cannot...

Not sure if this thread belongs here or in networks. I have a point of sales system that is Windows 7 based. Connected to serial port 3 is a customer pole display that shows the total for each item sold. My problem is that my point of sale software say that it cannot connect the pole display...

I am trying to redirect com port from Windows 7 to Windows 7 over RDP but it never works. I can redirect Drives, printers and everything else, just not com ports. Any ideas? Thanks

Hello all, I have been using an arduino ethernet for a few days and everything worked well. While uploading a sketch (arduino code) i received an error stating that the arduino was no longer connected to COM 4. I opened up the device manager, the arduino wasn't connected was there even though...

hey guys! I have a USB DVB card that works good! 3 days ago I have working on virtual com ports in matlab soft! and after that when I connect dvb card to my laptop usb ports the dvb software doesn't detect dvb card! and shows this message: all capable dvb adapters are busy no free device has...

Hi. I have a first generation envy 14 running windows 7 HP. Ports (COM and lpt) were showing up and working fine up until I reformatted the computer. I then noticed that they were gone. I installed all the drivers for my machine, most notably the chipset drivers, from the HP website. I enabled...

Hi i finally was able to find the COM Ports on Windows 7 Home Premium after going through some posts.All I did was:Control Panel-> Firewall-> Advanced Settings-> Inbound or Outbound.Clicked on a program name in Inbound connections and tried to allow Edge traversal which was previously...

Hey I have a usb to serial adapter for use with Cisco routers and switches. Everytime I plug it in, it seems to choose a random COM port. Is there any way to make that device always use the same COM port. OS: Windows 7 Ultimate Thanks

I have used Add a Device to connect W7-64 to my BT GPS. No problem really. However, I want to use it with some ships navigation software which only uses COM 4. The device gets its COM service hooked to COM 3 automatically, and I see no way to change it. The Bluetooth Setup on XP allowed both...

I recently bought a USB to RS232 adapter (it works fine). My question is: How can find out which com port it is using, except by trying all of them and then finding the one that works. I have a older Thunderbird GPS 10 MHz frequency standard thet requires a RS232 interface to talk to it (for...

So, I am trying to get an Arduino board to connect to my Windows 7 machine. However, after installing the drivers, I can't see which port it is assigned to. There is no "Ports (COM and LPT)" listed in the device manger, and if I bring up the properties for the device it does give me location...

I just bought a new computer with Windows 7. It is a HP Pavillion and only has USB ports. I NEED to use old peripheral(s) with serial and parallel cables. I have bought adapters for both and everything connects okay, but then I can't use the software because it's looking for a COM 1 port or an...

I have a Garmin GPS connected to a USB port. In XP I was able to see the USB ports under PORTS in the device manager and figure out which port it was connected to. I cannot see that in W7, I can't figure out which com port the usb port represents and my mapping software only sees COM1 (a...

Hi Im trying to flash my Dreambox 800 HD Pvr. When im runing Dreamup program get msg . Error:cant find any com port-aborting unable to open Link Removed Link Removed Please Guide me how can i get out this problem.. Thanks Boltakal

A vendor told me that supposedly Windows 7 has some emulation options for com ports. Is this true? If so how does it work. I have a handheld scanner that is USB, when I plug it into the computer it is recognized as a keyboard (scanner normally in keyboard wedge mode), but I need to use a com...

Hey guys, ive spent about 2 hrs trying to fix this issue Ive recently formatted a computer we use at a tanning salon and installed windows 7. Was running vista xp before Basically the device we use to control the beds is a serial port connected piece of hardware called a t-max manager...