Obtain the latest version (v3.8.19.1 or newer) from the Microsoft Update Catalog or the manufacturer's provided link.
If your software requires a specific port (e.g., COM1), you can change this in Device Manager > Port Settings > Advanced . Remember to restart your computer for the change to take full effect. Driver Specifications Z-tek Usb To Serial Comm Port Driver Free Download
Often identified by USB\VID_067B&PID_2303 (Prolific) or USB\VID_1A86&PID_7523 (CH340). Microsoft Update Catalog Obtain the latest version (v3
Right-click the .exe installer and select Run as Administrator . If you are installing from a .zip file, extract all files first. To ensure your hardware is recognized correctly, follow
To ensure your hardware is recognized correctly, follow these steps for a manual installation:
Supported on both x86 (32-bit) and AMD64 (64-bit) systems.
If you are using a Z-tek USB to RS232 serial adapter to connect legacy hardware—like routers, CNC machines, or PLCs—to a modern computer, you likely need a specific driver to enable communication. Most Z-tek adapters rely on the or CH340 chipsets, which create a virtual COM port on your system. Quick Summary for Z-tek USB to Serial Drivers Operating System Recommended Driver Source Windows 10 / 11 Microsoft Update Catalog Official & Signed Windows 7 / 8 / 8.1 DriverMax (Version 3.8.19.1) Verified for legacy Legacy (XP / Vista) Rocket Drivers Official Pack Compatibility focus How to Install the Z-tek USB to Serial Driver