When I plug them in, whether to a USB hub or USB port on the Mac Pro no entries appear in /dev at all.Both devices appear in System Profiler with correct descriptions etc.Nothing appears in the Networking pane of System Preferences.If I fire up VMware the serial ports are there and correctly identified and if I connect them to my Windows VM they work fine.I wish to use minicom which I have installed using ports to access a serial device connected to my machine (without having to fire up VMware and Windows just for this simple task!), but I can't determine which serial port I should be using in minicom - given that the /dev/tty.usbserial entry is not appearing. Also, as Windows 8 RT is a closed system not allowing for 3rd party driver installation our Windows 8 driver will not support this variant of the OS. The Keyspan USB Serial Adapter Software for Mac OS X allows you to add serial ports to your Mac OS X computer. Using Mac OS X native software, you can use your Keyspan USB to Se-rial Adapter to communicate with various serial devices via the POSIX API (for more informa-tion, Serial Ports - Mac OS X vs Classic Mac OS section in this manual).If you have a null modem cable and a terminal program on the other side, the Mac actually has a built-in terminal program called “screen” that you can use to test the connection.Once that is up and connected (and if the serial ports are set to the same baud rate and paramters), you can type on either side and see the characters come across.USB Serial on the Mac is a real melding of the very new and very old. On Mac, the file which maps to the port is /dev/cu.usbserial. And this won’t change the “Not Configured” message – that’s still ok.Now finally, you need an application which will talk to the serial port. Because it’s a serial port, it’ll say “Not Configured” and that’s normal:From the “Advanced” button you can change default settings (usually not needed). This is normal, click ‘Continue Installation‘.Installing should start (takes a couple of minutes to complete)After you restart, check that everything has installed OK.On the Mac there are two methods to determine this:Your results should be very close to this:Now click on the ‘+’ sign on the bottom left, and then on the ‘Select the interface and enter a name for the new Service’ click on ‘Interface’ – you should be seeing the ‘USB-Serial Controller D’ there.This will create a “Network” interface for a modem or serial port.
Serial Port For Usb On Driver Installation OurTry verifying on a friends computer.OK, let’s assume you see the two device names.Open your “System Preferences”, then click your “USB-Serial Controller D” (or whatever it’s called), click the button in the bottom of the panel (to remove it!), click “Apply” and quit System Preferences.Try your UPS software again and see if it works now.You’ve come a long way already. If the Prolific Driver installer works without an error, then the commands below should return values similar to those listed above when run with the adapter connected:If you are not seeing the expected output from these commands, please verify that your adapter matches the 3rd photo in our post, showing the entry in system profile:If your adapter does not match this entry, our instructions unfortunately will not be relevant for your adapter.If these instructions don’t work, please email with your Amazon order ID for further support.I am sure I can’t help you, because I gave up on my microcontroller communication, but I’d like to tell you what I would try (if you haven’t tried it already):1: Try unplugging your USB-to-Serial adapter.2: Open the terminal, type (without the $):3: You should see nothing after the above line, now plug in your USB-to-Serial adapter, then type……You should see ‘cu.usbserial’ and ‘tty.usbserial’.If you see those two device names, I believe you should contact the manufacturer of the UPS.If you do not see the two device names, your USB-to-Serial adapter might be defective. Another common reason for the symptoms you describe would be trying to add the USB Serial Device to network connections when the cable isn’t connected to the system. If you have an old 9600 baud Hayes modem, it would be fine for such tests. Then open a terminal window on your Mac OS X machine and typeIf you’ve connected another Mac OS X machine with another USB-to-Serial adapter, you can type……Then the text should appear in the ‘cat’ window.You could also run for a ‘terminal program’ (I think PuTTY will work) on a PC and configure it to 9600 baud, 8N1.…Or if you have an easier way, just use that eg. A cable where only GND is connected and Rx is connected to Tx and Tx is connected to Rx that’s all that’s necessary). In this folder, there might be more than one interesting file. You’ll now see a folder called “Contents”, open it. Having written software for a PL2303 device myself, I know that there are a few things to do, to write the software properly.One thing *not* to do when writing software, is to use ‘/dev/somename’, because this changes like the weather different device, different name.There might be one more thing left to try… If you right-click on your software application, you’ll see the “Show Package Contents” in the contextual menu. What is the best external dvd burner for macThis means the Profilic driver is shown in the system overview but does in fact have no KEXT loaded to make this thing work.I’ve found a workaround which is kinda annoying and does in fact work only as long as you don’t plug any other USB devices into the port after getting the adapter to work. A newly integrated feature which does in fact prevents any unsigned KEXT to be loaded. Still nothing ? -try “rs232” or “uart” or “usart”.(Just a thought: I find it a bit weird, if the UPS vendor writes sofware to communicate with the UPS via RS232 and the same vendor does not mention anything at all about compatibility or how to actually connect the UPS in the manual – because why then use several months/years on writing the software? -But I guess some companies want to be strange.)The enemy is called SIP. Plist are usually the places where the developer would store such things, which could be tweaked or changed without re-compiling the application.From the terminal, you can also trying CD’ing to the application’s Contents folder and do a…If nothnig found, try “tty” instead of serial. Try and see if you can find a name of a serial port in there.If there’s nothing interesting in that file, try looking inside the “Resources” folder.
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