No. Never. Many "driver download" websites rank highly for the keyword "Z-tek usb to serial comm port driver free download" but they host malicious files. These fake drivers may contain:

Always stick to:

For Prolific PL-2303 (genuine chip):

For counterfeit/old PL-2303 (Code 10 error):

For CH340/CP210x:

Many sites (e.g., driverdr.com, treexy.com, driverfix.com) claim “Z-Tek USB to Serial Driver Free Download” but often deliver:

Do not use these sites. Only manufacturer links or Microsoft Update Catalog (for signed drivers) are safe.