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Prolific USB to Serial Comm Port Driver Overview
If you are using a Prolific USB-to-Serial device such as PL2303, after upgrading the system to Windows 10, it is out of work. And when you open device manager, there is a yellow exclamation in the Ports (COM & LPT) list: Prolific USB-to-Serial Comm Port (COM5).
And when choosing the properties from the right-click context menu, the General tab shows a code 10 error: the device cannot start.
What is Prolific USB to Serial Devices?
The USB to Serial devices is developed by Prolific to provide interface bridge solution to connect your legacy peripherals and application on Windows, Mac, Linux and Android system.
Tips:
If you think your profilic USB cable is broken, you can get another one from here: Prolific USB 2.0 to RS-232 DB9 Serial Adapter.
How to Download Prolific USB-to-Serial Comm Port Driver
So when you met this problem, do not worry about it. There are 3 ways you can do to solve it.
Solution 1: Update Prolific USB-to-Serial Driver in Device Manager
The normal way and fast way to solve it 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.
1. Open device manager by right-click Windows icon and choose it from the results.
2. Expand Ports (Com & LPT), right-click Prolific USB-to-Serial Comm Port (Com5) to select Update Driver Software. In your computer, maybe it is another comm port.
3. Search automatically for updated driver software. In this step, windows will search the latest of prolific USB to Serial driver for Windows 10.
After Windows 10 detected the right driver, it will download and install it automatically.
If the device manager cannot help you solve this problem, try to use the next two solutions.
Solution 2: Update Prolific USB to Serial Drivers Automatically
If you have the problem of manual downloading the USB to serial driver, you can use Driver Booster to help you.
Driver Booster, a professional drivers download and update software, can scan all the missing and outdated devices drivers such as graphic, audio, USB, keyboard, speaker, mouse, monitor, battery etc.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.
1. Download, install and run Driver Booster on your computer.
2. Follow Scan > Update or Update Now process to finish update the prolific USB to Serial drivers.
Driver Booster can detect all the computer devices including internal and external devices. In Windows 10, it will identify all the devices and shows the original driver version, release date, manufacturer.
After identifying all devices, it will compare these drivers with the latest drivers. If the driver is not the latest one, it will recommend the latest driver. If one of the devices does not have a driver, it will also provide the latest driver.
Solution 3: Manually Download Prolific USB to Serial Drivers for Windows 10
Before you fix it manually, you need to uninstall USB to Serial device at first.
1. Right-click the Prolific USB-to-Serial Comm Port and choose to Uninstall to delete the device.
2. Enter the Prolific download center. Here use the PL2303 as an example. Then you will see the different devices. You can choose PL2303 windows driver download.
3. In PL2303 Windows drivers download page, you can download the driver file: 18.0B.zip.
Usb To Serial Port For Mac Pro
This file supports windows 10 and it is a WHQL driver. So you can download it safely. After PL2303_Prolific_DriverInstaller_v1.18.0B.zip file downloading finished, install it step by step.
After updating the driver, reboot the computer and check it in the device manager. And of course, you can check if the code 10 error disappears.
So using these 3 methods to update prolific USB to Serial drivers for Windows 10 can fix the devices not working issue.
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Before we get into the software fixes, let’s start with the simplest solution of all: restarting your Mac. Switch the Mac off and back on again. You’ll be surprised at how many problems a quick restart solves.
Next, check the USB device. There’s a chance that it could have failed, particularly so if you’re using a cheaper cable. Inspect the device visually, looking for damage to the connector and any signs of frayed wiring. If there is no apparent damage, take two different USB devices and test them against different ports. If the devices aren’t working on one or all of the ports it’s more likely to be an issue with your Mac and not the device.
A USB device that works on one port but not another is a sign of a faulty port. If this is the case, the only real solution is to contact an authorized Mac specialist for a hardware diagnostics test and have the port repaired.
If the device doesn’t work in any of your ports, then continue reading for some potential fixes.
What to do if Mac USB devices are not working
All of your Mac or MacBook USBs not working is actually better news than one failing. It’s unlikely that all of your ports would fail at once which means the fix is probably an easy one.
Here are three things to try, starting with the most common fix.
1. Reset the SMC
Resetting the SMC (System Management Controller) is a simple fix that cures a wide range of hardware issues. How this is done depends on whether you’re using a MacBook or Mac desktop.
Resetting the SMC on a MacBook
- Shutdown your MacBook.
- Connect the power adapter.
- Hold Shift+Control+Option and the Power button at the same time.
- Release all the keys at the same time.
- Let your MacBook boot up as usual and the SMC will be reset.
Resetting the SMC on an iMac, Mac mini, or Mac Pro
- Shut down your Mac.
- Disconnect the power cord.
- Press and hold the Power button for 5 seconds and release.
- Reconnect the power cord and switch the Mac back on.
2. Check for updates
Outdated firmware and software results in various hardware issues, including... Yep — Mac USB ports not working.
Check for system updates by opening the App Store and clicking on the Updates tab. If updates are available, click on the Update button next to each application that you want to install.
3. Reset PRAM/NVRAM
The PRAM (Parameter RAM) and NVRAM (Non-Volatile RAM) hold information about various USB components. Resetting them could be the solution to your USB woes.
Apple Usb To Serial
It’s a slightly different process to resetting the SMC, but no less difficult.
- Shutdown your Mac.
- Restart it, holding down Command+Option (ALT)+P+R as you do.
- Hold down the keys until you hear a sound and see the screen flash.
- Listen for the chime sound and let the Mac boot up as usual.
4. Uninstall potentially conflicting apps
If the USB ports not working on your MacBook Pro or iMac is a recent issue and there doesn’t seem to be any problem with USB devices, it could be that an app is conflicting with USB functionality. If you’ve downloaded an app from an unknown source there is the potential for it to contain malware, which could also be the cause of the problem.
In any case, it’s worth uninstalling recently downloaded and installed apps. If they aren't the reason for the USB ports acting up, you can easily reinstall them from the App Store.
One way to remove apps is to use Launchpad or Finder. Or you can use a quicker, more effective method: CleanMyMac X.
To completely remove an app and every file associated with that app, use CleanMyMac.
CleanMyMac’s Uninstaller tool scans your entire system for every trace of an app and completely removes it. Using the tool is every bit as easy as deleting an app manually.
- Download and launch CleanMyMac (free download).
- Click on Uninstaller from the sidebar menu.
- Select the app that you want to remove from the list.
- Click Complete Removal in the Smart Selector panel.
- Hit Uninstall.
While CleanMyMac lets you uninstall apps in bulk, in this case, you should delete apps one at a time until you find the culprit. CleanMyMac also lets you clean up unwanted junk, declutter your Mac and improve performance.
One way to uninstall apps manually is by using the Launchpad:
- Open the Launchpad.
- Find the app that you want to remove and click and hold the icon until it starts to jiggle.
- Click on the X that appears in the corner of the app, then click Delete.
You can also uninstall apps from the Finder:
Terminal Usb Port Mac
![Usb To Serial Port For Mac Usb To Serial Port For Mac](/uploads/1/1/8/6/118693112/187193208.jpg)
- Open the Finder and go to Applications.
- Find the app that you want to remove and drag its icon to the Trash (you might need to enter your admin credentials to confirm you want to delete the app).
- Click on the Trash icon and select Empty Trash.
Usb To Ttl Serial Cable Mac
Having one or more USB ports not working on your Mac can be hugely frustrating, especially if you rely on those ports for data backup and external peripherals. That said, USB problems are quite rare and are usually easy to fix. Work your way through these troubleshooting tips until you find the one that works and restore your Mac to its full glory.