Jan 20, 2015 - However, the drivers from Prolific don't work with all cables out of the box. Head to Apple -> About This Mac and and choose System Report.

1. Prolific Technology Usb Serial

Available forum solutions to this problem are half-baked. When you plug the device into USB, it is well recognized by W10 and it try to load the Prolific driver. In the meantime action according this guideline was successful: In reply to OmarGimenez’s post on November 22, It allows a simple and easy way of adding serial connections to your PC without having to go thru inserting a serial card and traditional port configuration. Uploader: Date Added: 3 December 2010 File Size: 50.64 Mb Operating Systems: Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X Downloads: 72952 Price: Free.Free Regsitration Required Run the Sirf Demo software. Download drivers from Prolific site.

Below installer program will remove all of the incompatible drivers — make a change so that Windows can never update the driver without your approval — usb serial prolific install the Version 3. Mohammed Yaseer replied on August 16, For more informations and where to download this tool, take a look at this article: Prolific does not sell cables with Prolific brand and packaging. Polific Design by Alvitr.

Prolific Technology Usb Serial

Notice in above picture, Code 10 usb serial prolific. Prolific Drivers – Plugable The “Driver Version” must say “2. Sometimes, installing the latest version of udb solve the problem, but in this case, this is the opposite. What worsens this issue is that there are many “Prolific Driver Removal Tools” that do not work properly. I have the same question Even vendors selling their “USB to Serial” adapters are baffled. In summary, this article usb serial prolific for: Issue will also may show messages like this: And since USB does not require any IRQ resource, more devices can sreial attached to the system without the previous hassles of device usb serial prolific resource conflicts.

If you watch the configuration panel, you will usb serial prolific the COM port coming OK, but then switch off because of error This site in other languages x. June 1, Applies to: You usb serial prolific check it, using the configuration panel: If it offers a choice to remove the driver, then select to remove the current “bad” driver. Drivers for USB to Serial Adapter Prolific and FTDI I’ve used smaller version of this product that were sold by Best Pro,ific I loved the flexibly of this product for us with connecting to console ports on network equipment that also require a Cisco console cable. We issue this warning to usb serial prolific our customers and consumers to avoid confusion and false purchase. Good Way Technology Co. May be, usb serial prolific solution will be to use the old W7 drivers version into W FelixHitz replied on December 1, It supports data transfer rates of up to thousand bps.

In reply to OmarGimenez’s post on November 22, Download and install this latest version 3. The USB converter is housed setial a strong molded enclosure designed for use in usb serial prolific application areas.

PC draws its power from the USB connection Home Contact Support Knowledgebase Downloads. In case you suspect a counterfeit chip inside, you may also contact Prolific to provide the vendor information. USB to Serial USB adapter Cable converter StanP12 replied on December 16, I have tested it and it work fine.

So no matter how many times you remove the driver files and reboot porlific usb serial prolific next time you insert the USB-To-Serial adapter, Windows installs the newest non-working version again. Magellan data cable accessories come standard with a DB-9 connector, compatible with the DB-9 port on your computer.

The Prolific Tech PL2303 USB to Serial port chip is used in a lot of USB connected serial-like devices, such as GPS, cellular phones and even plain serial to USB cables (for example, the IOGear or the Wiretek devices). The latest version of the MacOS X driver (1.0.6 as I write), works almost flawlessly. Except for a very frequent message on the system log: machkernel: ttyioss800000x: dequeueData ret 3machkernel: 00000x: dequeueData ret 3(x can be anything)If you use the driver with a 56K modem, you end up with hundreds of messages per minute. I found the cause being a rather obvious programming mistake, which can be corrected 'the hard way:'.

Unload the driver with:% sudo kextunload /System/Library/Extensions/ProlificUsbSerial.kext. Backup the original code with:% cd /System/Library/Extensions/ProlificUsbSerial.kext/Contents/MacOS% sudo cp ProlificUsbSerial ProlificUsbSerial.old. Make the driver writeable:% chmod 0777 ProlificUsbSerial. With a, open ProlificUsbSerial.

At offset 0x2288, you find 48 00 00 08 b.+4. Replace it with 38 60 00 00 li r3,0x0.

Change back the mode of the driver with:% sudo chmod 0555 ProlificUsbSerial. Load the driver:% sudo kextload -v /System/Library/Extensions/ProlificUsbSerial.kextThat's it! As usual, there's no warranty. A mistake in the editing phase, can cause any kind of trouble or malfunction.

All I can say is 'It works here.' In step 4, to avoid having to do hand edits, I suggest this instead - hexdump -s 0x2288 -n 4 ProlificUsbSerial (.

it should output '4800 0008' at 0002288.) printf ' 070 140 000 000' dd bs=4 seek=2210 count=1 conv=notrunc of=ProlificUsbSerial hexdump -s 0x2288 -n 4 ProlificUsbSerial (. it should now output '3860 0000' at 0002288.) dd is /bin/dd, the other two (printf and hexdump) are from /usr/bin All I did is to make the edit non-interactive, so you can copy/paste the command or script it. I have an Elecom UC-SGT USB-serial adpater with the Prolific PL2303 chip (I can see it through the clear casing) that refuses to work with the Prolific drivers (both 1.0.6 and 1.0.7b4) under both 10.2.6 and 10.2.8. When I plug the adpater cable in and open System Profiler, I get the following profile: Manufacturer ID: 1390 Product ID: 20483 ($5003) Device speed: Maximum Current: 100 mA but when try to create a new serial port in the Network Port Setting of the Network preference, nothing happens. There is no USB-serial device. I have read the net about various hacks like the one posted here and tried them all to no effect. Any ideas what I am doing wrong?

As a follow up, when I run Verbose mode at boot, I see a string of messages saying: IOUSB interface specific family matching fails This streams down the boot log about 20 times and then the boot proceeds. Could this mean that the ProlificUsbserial.kext driver is loading but somehow failing to recognise the Elecom USB-serial adapter with its PL-2303 chip? If so, what should I do to hack the Pinfo.list file in the kext driver?

If I know the product ID and manufacturer ID, from the System Profiler, could I plug them into the driver? I have a couple of PL-2303 based USB cables and at one point early on, I seemed to have fewer problems when I connected one of them through a USB hub, then into the system. That is probably irrelevant though, in most cases.

Also, at one point I tried running 'USB Prober', which is a nice little helper, I think I actually needed the DDK for that. They talk about getting debug info from the IOUSBFamily kext, in this doc - but that's probably not helpful for your situation. Thought I'd mention it since, you never know; Larry.

You could try this: Open /System/Library/Extensions/ProlificUsbSerial.kext/Contents/Info.plist with a text editor, find the line IOKitPersonalities After the tag, add: 5003056E CFBundleIdentifier com.prolific.driver.PL2303 IOClass comprolificdriverPL2303 IOProviderClass IOUSBInterface bConfigurationValue 1 bInterfaceNumber 0 idProduct 20483 idVendor 1390. IDG-you are the Wizard on this board. I am pleased to say that logging in as root, editing the ProlificUsbSerial.kext Info.plist with your lines of code using TextEdit, saving and a reboot did the job! I now have my Elecom serial port workin with my APC Smart-UPS. Many Many thanks indeed.

If anybody wants me to post the hacked Info.plist file for the Elecom UC-SGT (3,400 yen in Akihabara) let me know and I will put it up. The original package from Prolific in Taiwan is the latest 1.0.7b4 package which Kevin Su emailed to me after I called them from Japan. I had a problem under OS X 10.3 (Panther) with a Manhattan USB Serial adapter using the PL-2303 chipset. The driver is intended for 10.2 but does install. After a restart an error message says the driver has not been correctly installed. The solution is to correct the permissions and usership in /System/Library/Extentions/ProlificUSBSerial.kext sudo su chmod -R og-w /System/Library/Extentions/ProlificUSBSerial.kext chown -R root:wheel /System/Library/Extentions/ProlificUSBSerial.kext. I'm trying to connect a Sony CMD-J5 mobile phone to the Mac and talk to it via 'GSM Remote' App.

I've experienced a bloody hell of problems and since the original Sony USB-Cable uses the Prolific 2303 USB to serial I post it in this thread. Its not easy to find the Installer of the Kernel Module because Prolific doesn't show it on their website any more. I found version 1.0.3 somewhere else. After installing it didn't work and I got the error USBF: 182. 65 AppleUSBOHCI0x30aa000::MakeDevice error setting address.

Err=0xe00002ed device= 0x32be200 - releasing device in the dmesg. There's a site of the Apple Developer Connetion to update the USBFamily KEXT. Even for the latest 10.2.8 Kernel and G5 Macs. I wonder if Panther wil have it built in. This is where I stand today, I'll keep you informed about any progress.

I do also appreciate any help on this. Cheers, Joachim. Hi there: downloaded mdpl2303HHXXv1.0.9b6.zip from but the package would not install correctly.

After choosing the volume and clicking on install the system would display a dialog box indicating 'You cannot continue. There is nothing to install'!? Also tried to extract the driver with Pacifist and install manually.

Driver would load (kextload) without problems but I can't see a device/port in the application I want to use the usbserial adapter with (Hotsynch in my case). Thanks, Harry.