Click and navigate to the extracted folder from Step 1.
Look for an entry labeled or "FTDI USB Serial Port (COMx)" . The "x" represents the designated port number assigned by your system (e.g., COM3).
: Return to Device Manager. The device should now be listed under Ports (COM & LPT)
. Look for "USB-Serial Controller" under "Other devices" or "Ports (COM & LPT)". Download the Setup file from a source like the Microsoft Catalog Run the Installer Z-tek Usb To Serial Comm Port Driver Free Download
Visit the official FTDI Chip VCP Drivers page. They offer clean, certified executables for Windows 10/11, Mac, and Linux.
Most Z-tek adapters do not use proprietary Z-tek chips. Instead, they rely on third-party controller chips manufactured by companies like or Prolific Technology . Identifying the exact chip inside your cable is the most critical step to finding a free, working driver. Step 1: Identify Your Adapter's Hardware ID
of the Z-tek driver matches your specific hardware or operating system? Click and navigate to the extracted folder from Step 1
Visit the official Prolific Technology website and download the PL2303 USB-to-Serial Bridge Controller driver. Step-by-Step Installation Guide for Windows 10 and 11
Visit the Prolific Technology support page and look for the "PL2303 USB to Serial Drivers" package. Supported Operating Systems
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Open , right-click your Z-tek port, and select Properties . Go to the Port Settings tab and click the Advanced button. Find the COM Port Number dropdown menu at the bottom.
Select an older version from the list (dated 2008 to 2015) and click Next. The Comm Port Number is Too High (e.g., COM24)
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