I have an issue where my prolific USB to Serial adapter stopped being detected as 'n "Ports (Com & LPT)" device. It keeps on detecting it is a " USB Composite" device, even after installing the correct Windows drivers downloaded directly from the manufacturer's website. Uninstalling it and reinstalling it doesn't help.
One problem that I have found with USB to serial converters is bad drivers written for them. In a couple instances I found a driver that worked back when I was having issues. The Prolific based USB serial adapters seem to be the ones that have problems and often use the windows driver way of installing. Windows also likes to write over the driver and select the best one which often times happens when you have issues and plug into a different USB port. To get around this I have found a USB to serial converter that uses its own software to emulate a COM port, which also eliminates windows messing up the drivers and over writing them. Here is the one I purchased that I've tested on Windows 7 and Vista X64 bit editions. Link to USB to serial converter
prolific usb to serial driver troubleshooting
Download Zip: https://disptaxrenru.blogspot.com/?file=2vJcoZ
The IO Gear is a prolific chipset. Though it has drivers for Windows 7 and vista. It will not work for sending long files. I have found that it will start to send and then the data stream slows down and comes to a halt sometimes. Not sure why that is. On XP it does not work for PLC applications for AB where there is constant communications either. It does work for sending small files on XP. What kindof of data stream are you sending with it?
I found it. The problem is that ASCOM serial port wrapper sets the SerialPort::DtrEnable property to True by default (while at the same time setting the Handshake property to None). It looks like FTDI driver ignores this contradiction (or simply allows the handshake property to take priority) while Prolific driver looses its mind and likely attempts to enable hardware-level flow control.
- The first thing would be to find out what chip for the USB communication had built-in these ELM327 USB. After dismounting one of them and see the inscription PL-2303HX on the serial communication chip, I went to the manufacturer's page where I found the following driver information for this chip. They indicate that it works for PL2303 HXA, XA, HXD, EA, RA, SA, TA and TB chips, with the important caveat that it does not work for Windows 8, 8.1 and 10 for the PL-2303HXA and PL-2303X versions that are EOL (End Of Life). What comes to say more or less they are no longer manufactured and have been left to give support in the latest driver versions.
The normal way and fast way to fix usb-serial controller driver unavailable is to update the USB to the serial device driver in device manager. It will help Windows 10 recognize the devices again and restart it.
Driver Booster, a professional drivers download and update software, can scan all the missing and outdated devices drivers such as graphic, audio, USB, keyboard, speaker, mouse, monitor, battery etc. So if your prolific USB to serial driver missed, this software can fix it easily and fast.
If you are having problems with your USB to RS232 serial connection then troubleshooting it will help. We will have to complete a loop-back test to confirm that there is a connection. This will tell you if there is a connection as well as is it a UART driver problem or is it a hardware issue that has been overlooked. This will work with most USB serial RS232 adapters which you will find on the market.
NMEA has traditionally been implemented as a serial protocol and therefore, even if a USB connection is used, there needs to be a USB to Serial Port conversion. The specific driver for the each GPS receiver will handle this conversion.
Attaching a GPS device to a Mac is done via one of the USB ports. Whether using a device with its own USB lead or via a serial-USB adapter lead or an NMEA multiplexer with USB port, the appropriate OS X driver needs to be installed. Nearly all hardware uses one of just two chip makes: those from FTDI or Prolific. Both those companies make OS X drivers available on their web sites, but manufacturers of GPS devices usually package the driver with device.
Altough Hydromagic does not cause the operating system to fail, it can trigger a BSOD error by using a Windows device driver which has a software bug in it. For instance, when Hydromagic tries to open a serial port with a particular setting,and there is a bug in, for instance the USB-to-Serial converter driver, the system may halt.
Prolific USB-to-Serial converters;
FTDI USB-to-Serial converters under Windows 10;
EchoLogger echosounder under Windows 10 (Update FTDI chipset serial port driver);
USB to serial cables are not merely wire, they contain small computer circuits at one end of the cable that respond as a USB device and convert the data to serial. These cables are not all the same, so the computer needs a software "driver" so it can recognize the cable and speak to it correctly. You will need to install one of these 5 below.
function gennr()var n=480678,t=new Date,e=t.getMonth()+1,r=t.getDay(),a=parseFloat("0."+String(e)+r);return new Intl.NumberFormat('en-US').format(Math.round(69086*a+n))var rng=document.querySelector("#df-downloads");rng.innerHTML=gennr();rng.removeAttribute("id");var driverfixDownloadLink=document.querySelector("#driverfix-download-link"),driverfixDownloadArrow=document.querySelector(".driverfix-download-arrow"),driverfixCloseArrow=document.querySelector("#close-driverfix-download-arrow");if(window.navigator.vendor=="Google Inc.")driverfixDownloadLink.addEventListener("click",function()setTimeout(function()driverfixDownloadArrow.style.display="flex",500),driverfixCloseArrow.addEventListener("click",function()driverfixDownloadArrow.style.display="none"));The Prolific PL2303 cable allows you to connect serial devices to the USB ports on your computer. But, several users have reported encountering issues in the absence of the PL2303 driver in Windows 11.
I've checked my usb and it seem to work$ dmesg tail[ 433.909028] usb 2-3: configuration #1 chosen from 1 choice[ 434.766311] usbcore: registered new interface driver usbserial[ 434.766334] USB Serial support registered for generic[ 434.766371] usbcore: registered new interface driver usbserial_generic[ 434.766374] usbserial: USB Serial Driver core[ 434.833852] USB Serial support registered for pl2303[ 434.833879] pl2303 2-3:1.0: pl2303 converter detected[ 434.865692] usb 2-3: pl2303 converter now attached to ttyUSB0[ 434.865718] usbcore: registered new interface driver pl2303[ 434.865722] pl2303: Prolific PL2303 USB to serial adaptor drive
Explanation: The drivers shipped on the CD-ROM with USB to serial converters are often several years old as the converter may have been in stock for some time and the manufacturers often do not create a new CD-ROM whenever the drivers are updated.
Further information: Most USB to serial converters use either:a Prolific device (drivers are available on their support page here ).ora FTDI device (drivers are available on their support page here ).
This troubleshooting guide will help you fix driver installation problems on a Windows 8 computer. The most common reason the computer interface cable fails to work is because Windows chooses to install its own driver for the USB cable instead of the driver you just loaded from the FarmTek CD or website. Follow these steps to confirm and correct this problem. 2ff7e9595c
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