The card is actually in "Parallel-only" mode due to a jumper setting. Fix: Locate the jumper on the CH382SSP-1107 board. Move it from "LPT only" to "COM+LPT." Refer to the card’s silkscreen diagram.
To download and install the CH382SSP-1107 driver on Windows 10, follow these steps:
Once the driver is operational, optimize it for reliability:
Extract the files and use the "Browse my computer for drivers" option in Device Manager to point to the folder containing the Resolve "Code 28" Errors:
Use the WCH CH382 official driver , NOT the CD that comes with the card (the CD driver is often unsigned and for Win7).
Tools like Snappy Driver Installer (open-source) or IObit Driver Booster (free version) can auto-detect the chipset. However, only use these tools from their official sources, and create a system restore point first.
Windows 11, 10, 8.1, 8, 7, Vista, XP, and Server editions (2022/2019/2016). How to Install the CH382SSP-1107 Driver