: When a user adds a physical COM or LPT port to a modern PC via a PCIe card, they need specific drivers like the SuperLead 17 Series to make it functional.
Once you have downloaded the correct driver (e.g., CH341SER.EXE ), follow this process:
: Ignore “17-11” as a model number – identify the chip (often CH341) and download directly from WCH or the chip manufacturer. Avoid third-party driver sites. com lpt 17-11 driver download
Most "multi-I/O" cards (cards that provide both COM and LPT ports) use chips from a few specific manufacturers. Based on common market hardware, try searching for drivers from these official sources: MosChip / ASIX: These are the most common. Look for the ASIX MCS9865 WCH (WinChipHead): Very common in budget cards. Search for the or CH38x series drivers Oxford Semiconductor: Now part of If your card has a brand name, use the StarTech Support Portal to search by your specific product ID. ⚙️ How to Install Manually If you have a folder of drivers but no installer ( ), follow these steps: Device Manager , right-click your device. Update driver Browse my computer for drivers
Based on support forums (Microsoft Answers, Tom’s Hardware, Reddit), the "COM LPT 17-11" label often appears with: : When a user adds a physical COM
This 2,500+ word guide will explain exactly what the 17-11 code means, how to identify your hardware, where to download safe drivers, and how to fix installation errors on Windows 10 and 11.
If Windows blocks the driver:
Sometimes, clicking "Search automatically for drivers" inside Device Manager or checking "Optional Updates" in your Windows Update settings will find the driver without a manual download. To give you a more specific link, could you tell me: What is the Hardware ID numbers) from Device Manager? Windows version are you using (e.g., Windows 10 64-bit)? Is there a brand name or a small on the card itself with a model number?