Contents:
Prolific USB to Serial Comm Port Driver Overview
Name: Huawei FC Serial Drivers File size: 526 KB Category: Drivers Operating System: Windows Uploaded: 2016-02-27 07:31:20. Download the USB - 1x serial port driver below - save it to your computer, do not click run. Locate the download (usually in a Download folder) then unzip USBserialwin.zip. Open Device Manager - locate the adapter - double click it - select Install driver from disk and when prompted, select the correct driver for your Operating System. By default, the combined operation of the Ports class installer and the Serial function driver configure a serial port as a COM port. Serial creates a COM port device interface for a serial port if the SerialSkipExternalNaming entry value for a device does not exist or is set to zero.
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.
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.
Related Articles:
-->This topic describes the registry settings that Serial uses with legacy COM ports. Serial always configures a legacy serial device as a COM port.
Serial queries these entry values when it enumerates a legacy COM port. If a device-specific entry value is not present, Serial uses a Serial service value.
Serial Com Device Driver Download
The registry settings for a legacy COM port are under a corresponding legacy COM port subkey that is under the ..ServicesSerialParameters key.
The following entry values are the same as described for a Plug and Play serial device:
ClockRate
PortIndex
Indexed
RxFIFO
TxFIFO
MaskInverted
DisablePort
ForceFifoEnable
The following additional entry values are used with legacy COM ports:
PortAddress (REG_DWORD)
Specifies the untranslated base I/O address for the COM port control registers. Serial reads this value. The value cannot be zero. The default value of PortAddress is 0x00000000.
Interrupt (REG_DWORD)
Specifies the untranslated interrupt vector, as appropriate for the bus type. Serial reads this value. The value cannot be zero. The default value of Interrupt is 0x00000000.
DosDevices (REG_SZ)
Specifies the name of the COM port. The name of a COM port is typically COM<n>, where <n> is a COM port number that the installer obtains from the COM port database. However, a COM port name can be set to any non-NULL string. Serial uses the port name to create a symbolic link to the COM port that is visible in usermode. The default value of DosDevices is a NULL string.
InterruptStatus (REG_DWORD)
Specifies the raw I/O address for the interrupt status register. Serial reads this value. The value is omitted if the port is a stand-alone port. The value cannot be zero if the port is on a multiport device. The default value of InterruptStatus is 0x00000000.
BusNumber (REG_DWORD)
Specifies the system-wide bus number for the bus type. Serial reads this value. The default value of BusNumber is 0x00000000.
Serial Port Device Driver For Linux
BusType (REG_DWORD)
Specifies the bus type. Serial reads this value. The default value of BusType is determined by Serial during driver initialization.
InterruptMode (REG_DWORD)
Specifies the interrupt mode. Serial reads this value. The default value of InterruptMode is CM_RESOURCE_INTERRUPT_LATCHED.
InterruptLevel (REG_DWORD)
Specifies a raw interrupt level value that is appropriate for the bus type. Serial reads this value. The default value of InterruptLevel is 0x00000000.
Serial Port Device Driver
PnPDeviceID (REG_SZ)
Specifies a Plug and Play device identifier for a Plug and Play device. Serial reads this value. The default value of PnPDeviceID is a NULL string.
LegacyDiscovered (REG_DWORD)
Boolean flag that indicates whether Serial has previously reported the device to the Plug and Play manager. Serial reads and sets this value. If LegacyDiscovered is nonzero, Serial has previously reported the device and does not report the device again. Otherwise, Serial reports the device and sets the entry value to 0x00000001.