Go back to Device Manager and expand Ports (COM & LPT) . You should see "Prolific USB-to-Serial Comm Port (COMX)" without any errors. Prolific USB-to-Serial Comm Port (COM3) Driver for Mecer
15 Nov 2021 — Installer driver setup: * https://www.prolific.com.tw/US/CustomerLogin.aspx. * Sign in with your Private Account. Or enter "GUEST" Microsoft Community Hub
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