Due to Prolific USB/Serial chip 'clones' found in generic USB programming cables, an older driver is required in lieu of the one supplied by Windows. Note: Cables with FTDI chipsets are compatible with all Windows drivers. New Prolific Drivers may give a FALSE Positive: (6-2015).
10.4: Use an IOGear Serial to USB converter cable | 18 comments | Create New Account
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10.4: Use an IOGear Serial to USB converter cable
I had a situation recently where I needed a non-standard baud rate serial port interface. The only way that I know of do to this is to use a USB-to-serial convertor with the FTDI chipset in it and OS 10.4 (10.0 - 10.3 does not support non-standard baud rates). The prolific chipset found in most USB serial convertors only supports standard baud rates.
The Prolific USB-serial driver is very poor quality. It consumes way too many clock cycles when heavy transfers are in progress, and it will cause a kernel panic if software attempts to select an unsupported baud rate.
I had many problems with the drivers that shipped with the adapter, but I haven't had any problems with these drivers.
10.4: Use an IOGear Serial to USB converter cable No name USB to Serial cables often use the Prolific chip, but they also sometimes use the Silicon Labs CP2101; namely my T610 USB data cable. Sadly Silicon Labs doesn't give their drivers for download. But I have put up a guide (and instruction for obtaining the drivers) on my page:Getting no name usb to serial adaptors to work on Mac OS X. Prolific Usb To Serial Cable Driver For Mac Os X El Capitan
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10.4: Use an IOGear Serial to USB converter cable Hi All, If you CHANGE the Product & Vendor ID, the driver will then only work with the new product. What you Should Do, is simply ADD a a new DICT for the new product, like this:
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/Marook
10.4: Use an IOGear Serial to USB converter cable
Should the last line of your code be:
<key>0557_2008</key> and not: <key>0557_2000</key> to match the original key?
10.4: Use an IOGear Serial to USB converter cable
I've been successfully using these drivers in Tiger since version 1.09b6. Haven't had stability problems as have been mentioned, but I only use it for low-throughput serial connections.
In addition, these drivers allow me to run Virtual PC, install drivers on the PC and OS X side and have a working serial port for the emulated Windows environment. This kept me from purchasing a PC for my Windows-only ODB II software. For those that don't know, this is software for connecting a computer to a car and reading troubleshooting diagnostic codes and acquiring real-time engine sensor data..saves lots of money on trips to the dealer! The cable I use was purchased from RAM Electronics. http://www.ramelectronics.net/html/usb_serial.htm
10.4: Use an IOGear Serial to USB converter cable
Oh, and I should mention the drivers work 'out-of-the-box' for the adapter that I bought. No plist tweaking necessary. Not a bad deal for $22.
Prolific Usb To Serial Cable Driver For Mac Os X 10 12
10.4: Use an IOGear Serial to USB converter cable
Cool on using VirtualPC to talk OBD-II. I'm able to talk to an ECM at 8192 baud OBD-I natively on my iMac inside a Xcode project. (using an FTDI based serial convertor)
10.4: Use an IOGear Serial to USB converter cable
Anyone know of a good vt100 emulator that will support these. I have not found anything to do vt100 emulation using a serial port.
Dale
10.4: Use an IOGear Serial to USB converter cable
You can try ZTerm ($15 shareware) and minicom (free from darwinports/fink)
Is there anything else that you need to do to enable/setup the USB port-as-serial port??
I see the 'USB device' in the Profiler, and made the product and vendor Id edits to the latest Prolific PL2303 driver (v 1.1). I've unloaded and loaded the .kext file and plugged in the USB cable, but don't get any indicator of activity (the cable LED isn't on) and my application fails to see a serial port. --- reggie
10.4: Use an IOGear Serial to USB converter cable
Hey gang! First of all I am new to this Forum. I am a new Mac Intel user and I came accross this forum about getting the USB-to-Serial adapter to work with OS X.
I have a new Intel Core Duo Macbook 2.0 with OS X 10.4.5 installed. I can not for the likes of me get this GUC232A adapter to work. I know this is a new beast but I welcome any sugestions to get this to work. Here is a brief summary of what I do believe t be working. 1.) System Profilter > USB detects USB-Serial Controller (Version 3, Manufacture - Prolific Technology Inc. Product ID- 0x2008 Vendor ID 0x0557 If install drivers and then try to load kext I get the following. ************** 26com_prolific_driver_PL2303 is not compatible with its superclass, 18IOSerialDriverSync superclass changed? kextload: a link/load error occured for kernel extension /System/Library/Extensions/ProlificUsbSerial.kext load failed for extension /System/Library/Extensions/ProlificUsbSerial.kext (run kextload with -t for diagnostic output) ************** If I use the mentioed -t option ************** kernel extension /System/Library/Extensions/ProlificUsbSerial.kext has problems: Validation failures { 'Executable file doesn't contain kernel extension code' = true } ************** I have tried the driver: PL2303_1.0.8.pkg and PL2303_1.1.0b1.dmg Neither work.
10.4: Use an IOGear Serial to USB converter cable
same problem here, also on macbookpro. was anyone able to fix this problem?
10.4: Use an IOGear Serial to USB converter cable
I tried installing the drivers on a MacBook Pro and it caused the hang on reboot. It wouldn't get past the gray screen. It was pretty terrifying for a while.
Luckily, I had another mac to mount the MBP (via Target-disk mode). I was able to find the offending KEXT and delete it. Boots fine after that. Whew! If I didn't have another mac to do this with, I'd really be hosed.
10.4: Use an IOGear Serial to USB converter cable
i got the same exact problem as above with the SLAB_USBtoUART.kext
i'm using a CP2101 chip with intel MAC Mini 1.5 SOLO - MACOSX 10.4
10.4: Use an IOGear Serial to USB converter cable
I finally got this working. There's a new prolific driver available, not to mention a universal binary of minicom. The complete instructions are over at www.ciscoblog.com
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10.4: Use an IOGear Serial to USB converter cable
I found that in 'Change Kernel Extension Property List' step 4., the GUC232A was listed as 'Composite Device,' not 'USB-Serial Controller.' If you unplug and re-plug your converter, pressing Command-R (Refresh Information) each time, you should be able to see the corresponding entry disappear and appear. Also, in step 10., to avoid confusion, the plist file properties are 'idProduct' and 'idVendor.' Finally, in 'Reload Kernel Extension' step 2., the command as posted failed complaining of '(libkern/kext) not found.' The following command worked for me (omitted the Contents/Info.plist at the end): sudo kextload /System/Library/Extensions/
A patch for the Prolific USB serial driver | 23 comments | Create New Account
Prolific Usb To Serial Cable Driver For Mac Os X Lion
The following comments are owned by whoever posted them. This site is not responsible for what they say.
How did you figure out that the cause was a rather obvious programming mistake when all you could see was the binary code?
--- http://www.google.com/search?as_q=%22Authored+by%3A+david-bo%22&num=10&hl=en&ie=ISO-8859-1&btnG=
Well, I thought the error in the code must have been a rather harmless one from start, because the driver did work fine except for the message. Observing the code with otool -V -h i did see what I think is the result of a code like:
Given the obvious outcome of the code, do_other_stuff() either always returned the wrong result, or simply was not designed to return anything useful, and the code should have been:
I don't need it myself, but perhaps you could host or upload the edited driver yourself for people to download? It could cut down on mistakes by people less comfortable with hexeditors.
hexdump -s 0x2288 -n 4 ProlificUsbSerial
(* it should output '4800 0008' at 0002288 *)
printf '070140000000' | 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 *) Prolific Usb To Serial Cable Driver For Mac Os X High Sierra Download
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. Larry.
Sorry, my backslashes got eaten (in the printf command), let's try this instead --
printf '070140000000' | dd bs=4 seek=2210 count=1 conv=notrunc of=ProlificUsbSerial Sorry, it looked o.k. when I previewed it, I thought; there needs to be one backslash leading each of the 4 octal codes.
I've encountered the same thing. A double backslash in code in the preview becomes a single backslash when posted..
Prolific Usb To Serial Cable Driver For Mac Os X Update
Thanks; I felt a bit foolish after that happened yesterday, but I
haven't posted much using geeklog so I didn't know that the preview isn't final in the case of backslashes. I still don't understand how many times they need to call stripslashes, i.e. could they do it all prior to preview .. that should be a FAQ; Larry.
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? Usb To Serial Cable 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 -- http://developer.apple.com/hardware/usb/usbloggers.htm 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 After the <dict> tag, add:
Many thanks iDG--I'll give it a try and report back.
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. Flash media live encoder mac download.
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 <type your password> chmod -R og-w /System/Library/Extentions/ProlificUSBSerial.kext <return> chown -R root:wheel /System/Library/Extentions/ProlificUSBSerial.kext <return>
Has anyone been able to get the INtel Mac to connect to a USBSerial driver?
Guy
This may be a silly question, but where can I get the driver from??
Ross Barkman has been kind to provide a beta copy of the PL-2303 OS X
driver (1.0.7b), since Prolific no longer provides a free driver download for OS X on their tech support website. (See 'http://www.taniwha.org.uk') Thanks Ross! Larry;
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 AppleUSBOHCI[0x30aa000]::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
The download of the official driver (supporting Tiger) is available again:
http://tech.prolific.com.tw/visitor/v_filebrw_result.asp?CateID=138583
Hi there:
downloaded md_pl2303H_HX_X_v1.0.9b6.zip from http://tech.prolific.com.tw/visitor/v_filebrw_result.asp?CateID=138583 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). Any ideas? Thanks, Harry. Prolific Usb To Serial Cable Driver For Mac Os X 10 11
I am trying to connect my Kyocera 7135 with a prolific cable to my PowerBook G4 (OS 10.4.2) using SmithMicro QuickLink Mobile Mac v2.1.0. They say they are waiting on prolific to complete an updated driver. I installed the one mentioned above and it doesn't work consistently or completely. It did get it to connected a few times though, after restarting the Mac and resetting the phone each time, however it is very unreliable. Is there an updated driver in the works?
Now try:
http://www.prolific.com.tw/eng/downloads.asp?ID=31
Anybody using this driver on Snow Leopard? Want to find somebody who is before I go this route. Don't have any of the hardware yet.
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