If you have a device showing up as "COM LPT 17-11" or similar in your Device Manager, do not search for the name. Instead, use the Hardware ID. This is the digital fingerprint of the device.
Step-by-Step Fix:
You will see values that look like this:
PCI\VEN_9710&DEV_9835&SUBSYS_...
The Universal Workaround:
Once you have the VEN and DEV numbers, plug them into a database like pcidatabase.com.
If the VEN/DEV points to a MosChip/NetMos chipset (very common for COM/LPT cards), you do not need a specific "17-11" driver. You need the MosChip MCS98xx Driver Package. com lpt 17-11 driver download
Ironically, modern Windows (10 and 11) often detects these cards natively. If it isn't working:
Do not download from generic "driver download" websites. They often contain malware. Instead, follow this official method:
If a user sees a COM/LPT issue on a modern system (Windows 10/11), the actual problem is almost never a missing driver. The essay would list the real causes:
If you have landed on this page, you are likely searching for the COM LPT 17-11 driver download. This is a specific driver file often associated with legacy port emulation, USB-to-serial adapters, or industrial control devices. In many cases, the "17-11" designation refers to a specific device ID or a version of a PCIe/PCI parallel port card. If you have a device showing up as
This article will explain exactly what this driver is, where to find it, how to install it safely on Windows 10/11, and how to troubleshoot common issues.
If your device uses a NetMos chipset (common in generic PCI/PCIe cards):
The following devices are most likely to trigger the need for this driver:
Note: The "17-11" might appear in the device's hardware ID string. To verify, open Device Manager > right-click the unknown device > Properties > Details > Hardware Ids. Look for strings like USB\VID_17??&PID_11?? – the 17 and 11 could be vendor/product ID fragments. You will see values that look like this:
If you search for this driver, you will find results. But proceed with caution.
The "Driver Download" ecosystem is infested with malware. Sites that promise a direct download for "COM LPT 17-11" are often "driver bundlers." They wrap a generic, open-source driver inside an executable that installs adware, browser hijackers, or unnecessary "PC Optimizer" tools.
Because the hardware is likely a generic clone, there is no official website to visit. The original manufacturer probably dissolved years ago. Downloading a file claiming to be the "17-11 driver" is a roll of the dice.