USB Serial Driver on Windows 7/8/10: Download and Install

USB Serial Driver” is essential software required to comminute to your USB-To-Serial Adapters/Devices with Operating System version installed in your computer. With USB Serial Driver installed, you will be able to send data directly from ‘Serial Device’ to ‘USB Port’.

“USB-To-Serial Adapters” are cable where one end is USB connector plug into USB port or USB hub of computer, and other end is DB9 connector which plugs into the ‘Serial Device’. In other words, “USB-To-Serial Adapters” are considered as Data Transfer cable for USB-Serial devices.

Each USB-To-Serial Adapter cable is sold with ‘USB Serial Driver CD/DVD’ which is required to install before use for data transfer through this cable. This driver software acts as mediator between USB-Serial Adapter and Operating System like Windows 10 installed in your computer.

“USB Serial Driver” creates virtual serial port. As data are transmitted via USB port, they come in as serial signal. Since it is not a USB signal, the USB port can’t do anything with the information even when it can recognize the information.

Note that not all ‘Serial Devices’ can be used with USB-To-Serial Adapters, and some PCs/laptops don’t support the USB Serial Driver software. So, you should make sure your computer meets the requirements for this adapter software before purchasing the ‘USB-To-Serial Adapter’. You should try to contact the manufacturer to determine if your device is supported.

“In computing term, ‘Serial Port’ – is the serial communication interface which allows device to transfer data one-bit at a time while ‘Parallel Port’ transfers the data as multiple bits simultaneously”.

How to download and install USB Serial Driver on Windows 10/8/7?

Step 1: At first, you need to visit your USB-To-Serial Adapter manufacturer website and download the driver according to your Operating System version and USB-To-Serial Adapter. Or, you can install USB Serial Driver directly from CD/DVD that comes with USB-To-Serial package during purchase.

Step 2: If don’t want to install it from CD, then double-click on “setup file” which you are downloaded from its official website, and follow on-screen instructions to finish the installation.

How to update USB Serial Driver on Windows PC?

Sometimes, “USB Serial controller not working issue” can occurs if USB Serial Driver is missing, corrupted, or outdated. In this case, you need check if the driver is properly installed or not. If not, update or reinstall the Driver to fix.

Step 1: Press “Windows + X” keys together from keyboard and select “Device Manager”

Step 2: In the opened “Device Manager”, locate your USB-To-Serial device in the list of devices or expand “Other Devices” category to see this.

Step 3: Right-click on your USB-Serial Controllers Driver and select “Update Driver Software…”

Step 4: In next window, select “Browse my computer for driver software”

Step 5: Select the folder and ‘setup file’ where you have saved the ‘Setup file’ downloaded from manufacturer’s official site.

Step 6: Follow on-screen instructions to finish the installation process.

Step 7: Once done, try transferring data between Serial Device and USB device.


I hope this post helped you to know about “USB Serial Driver” or “USB-To-Serial Adapter Driver” and how to download/install it in your computer. Note that if you want to transfer data between ‘Serial Device’ and ‘USB Device’ by connecting both devices using “USB-To-Serial Adapters/cables”, then you should make sure the “USB Serial Driver” is properly installed in your computer. If this post really helped you, then you can share this post with others to help them.