How to Install USB Serial Port Driver on Windows 8 32 Bit
USB serial port driver is a software that allows your computer to communicate with USB devices that use serial communication protocols, such as modems, scanners, printers, and more. If you have a USB-to-serial device that you want to use on Windows 8 32 bit, you need to install the appropriate driver for it. In this article, we will show you how to do that.
How to Install USB Serial Port Driver on Windows 8 32 Bit
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Method 1: Use the Microsoft-provided in-box driver (Usbser.sys)
Windows 10 and later versions of Windows include a built-in driver (Usbser.sys) for USB serial devices that belong to the communications and CDC control device class. This driver is loaded automatically based on a compatible ID match similar to other USB device class drivers included in Windows. You do not need to write or download an INF file for your device because the system uses Usbser.inf[^1^].
However, in Windows 8.1 and earlier versions of Windows, Usbser.sys is not automatically loaded when a USB-to-serial device is attached to a computer. To load the driver, you need to write an INF file that references the modem INF (mdmcpq.inf) by using the Include directive[^1^]. You can find an example of such an INF file in the USB samples folder of the Windows Driver Kit (WDK)[^2^].
To use this method, follow these steps:
Download and install the WDK[^2^] on your computer.
Open the USB samples folder (C:\\\\Program Files (x86)\\\\Windows Kits\\\\8.1\\\\Samples\\\\usb) and locate the usbser sample folder.
Copy the usbser sample folder to a convenient location on your computer.
Open the usbser.inf file in a text editor and modify it according to your device specifications. You need to change the hardware ID, vendor ID, product ID, and device name of your device. You can find these information in the Device Manager or by using a tool like USBDeview[^3^].
Save and close the usbser.inf file.
Connect your USB-to-serial device to your computer.
Open the Device Manager and locate your device under Other devices or Ports (COM & LPT).
Right-click on your device and select Update Driver Software.
Select Browse my computer for driver software.
Select Let me pick from a list of device drivers on my computer.
Select Have Disk and browse to the location where you saved the usbser.inf file.
Select OK and follow the instructions to install the driver.
Method 2: Download and install the driver from the device manufacturer's website
If you cannot find or use the Microsoft-provided in-box driver (Usbser.sys) for your USB-to-serial device, you can try to download and install the driver from the device manufacturer's website. This method may require more time and effort, but it may also provide more features and compatibility for your device.
To use this method, follow these steps:
Identify the make and model of your USB-to-serial device. You can find this information on the device itself or on its packaging.
Go to the device manufacturer's website and look for a support or download section.
Search for your device model and find the driver that matches your operating system (Windows 8 32 bit).
Download the driver file and save it to a convenient location on your computer.
Unzip or extract the driver file if it is compressed.
Connect your USB-to-serial device to your computer.
Open the Device Manager and locate your device under Other devices or Ports (COM & LPT).
Right-click on your device and select Update Driver Software.
Select Browse my computer for driver software.
Select Browse and navigate to the location where you saved the driver file.
Select Next and follow the instructions to install the driver.
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