Usb R232 Drivers For Mac

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The easiest way to go about installing our Plugable USB to Serial adapter is by starting with the device.

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Mac
  • If you want to verify that the adapter and the driver were installed properly click here

Connect the device to the Mac. Once connected click on the Apple icon and on ‘About This Mac’
Click on ‘More Info…’
Click on ‘USB’ on the left and on the ‘USB-Serial Controller D’
If all is well you should be seeing something like this:
Time to get the driver! Fire up Safari and browse to https://plugable.com/drivers/prolific/ and scroll down to Mac.
Click on the ‘PL2303 MacOSX10.6 dmg v.1.4.0.zip’, the Safari Downloads window should come up:
Double click on the md_PL23-3_MacOSX10
Now double click on the PL2303_1.4.0.dmg to mount the image
Now double click on the PL2303_1.4.0 to start the installation
Once the installer comes up click ‘Continue’ to proceed.
Then ‘Select a Destination’ click on your desired drive and click ‘Continue’ to move forward
Now just click ‘Install’ to continue.
You may be asked of your username and password – enter them and click ‘OK’
You’ll get a warning about restarting the computer after the installation is complete. This is normal, click ‘Continue Installation‘.
Installing should start (takes a couple of minutes to complete)
When it’s done you should see this:
Click on ‘Restart’ to reboot the Mac.

After you restart, check that everything has installed OK.
On the Mac there are two methods to determine this:

Method 1:
Click on ‘Applications’
Click on ‘Utilities’
Click on ‘Terminal’
Type:
kextstat grep prolific
and:
ioreg -c IOSerialBSDClient grep usb
Your results should be very close to this:
Method 2:
Click on ‘System Preferences’
Click on ‘Network’
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. 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). 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. On Mac, the file which maps to the port is /dev/cu.usbserial. 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.

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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.

Support

There’s a new terminal app called Serial available on the Mac App Store that works with the Plugable USB-serial adapter without requiring any drivers. I wrote it to make serial ports easier to work with on the Mac. The USB to RS232 converter is easy to install and offers broad operating system compatibility, including Windows® 8 and later, Linux and Mac OS®, for easy integration into mixed environments. Backed by a StarTech.com 3-year warranty and free lifetime technical support. NOTE: Microsoft have ended support for certifying XP and VISTA through their WHCK test program. From revision 2.12.24 with Device Guard Support, the driver will not load on XP or VISTA. Differences in Driver API. For most of these operating systems two types of driver are available: Virtual COM Port (VCP) drivers and direct (D2XX) drivers. You will find USB to Serial chips in car tuning tools, routers, coffee machines, gps trackers, measurement tools, audio effects and so on. We preloaded our drivers with over 150 personalities to make your device plug'n'play.

USB Serial on the Mac is a real melding of the very new and very old. If you have any trouble, just visit plugable.com/products/pl2303-db9/support to see existing FAQs for Plugable’s USB Serial adapter.

Where to Buy

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When you troubleshoot issues with a serial device, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:

  • Serial cables

  • Serial ports

  • Serial devices

To test your setup components, try the following:

  • Use the serial cable, serial port, and serial device in another setup to see if the problem is with the components or the setup.

  • Use a different serial cable, serial port, and serial device in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.

When you test your cables, it is recommended that you do the following:

  • Test each cable individually.

  • Use short cables when you are testing.

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When you test the serial ports and serial device, it is recommended that you do the following:

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  • Press the Windows key + R, type devmgmt.msc, and press Enter to open Device Manager. Check to see if your device is listed under Ports (COM & LPT).

  • Make sure that the COM port number is the correct number for the serial device and that the software being used to connect the computer to the serial device uses the correct COM port number.

  • If you do not see the COM port number in Device Manager see this FAQ for PCI/PCIe expansion cards: https://www.startech.com/support/faqs/technical-support?topic=expansion-cards#pci-pcie-cannot-boot-os-or-detect-windows
    or this FAQ for USB devices: https://www.startech.com/support/faqs/technical-support?topic=expansion-cards#usb-cannot-detect-windows

  • If the device is listed with an error, follow the instructions on the website to reinstall the drivers.

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Note: Some serial devices work only if the COM port number is between a certain range. For example, COM1 to COM4.

Drivers

Usb To Rs232 Driver For Windows 10

  • Perform a serial loopback test. See this FAQ on how to perform a RS-232 serial loopback test: http://www.startech.com/faq/serial_loopback_test_rs232_windows