Buy only if your OS is Linux or Windows 7, and you accept occasional disconnections. Otherwise, spend $15 more for reliability.
The Z-Tek USB to Serial adapter is a . If you need a one-time connection to an old router on Windows 7 or Linux, it’s fine. For Windows 10/11, avoid unless you enjoy driver troubleshooting. Pay slightly more for a genuine FTDI or StarTech adapter, or get a CH340-based adapter (which has fewer driver wars). Z-Tek’s driver situation is outdated, and the company provides no direct support – you’re relying on Prolific’s dwindling legacy drivers. z-tek usb to serial comm port driver