Based on 500+ forum posts (EEVblog, Reddit r/usbhardware, and Russian cxem.net):
“I spent 6 hours looking for a stable driver for my USBasp clone. VID 346D PID 5678 CH340 patched driver saved me. No disconnects anymore.” – user tech_rescue
The CH340 driver patched to accept VID 346D works for 90% of users. This driver is ideal for USB-to-serial adapters. vid 346d pid 5678 best patched
The last officially supported drivers for the L300 were included in vSpace 8.3.0.1. However, this version has severe limitations:
Do not download the first random driver.zip from a sketchy forum. That is how you get ransomware. Instead: Based on 500+ forum posts (EEVblog, Reddit r/usbhardware,
You need to inject the new Device ID via your config.plist.
| Key | Type | Value | Description |
| :--- | :--- | :--- | :--- |
| compatible | String | pci14e4,4353 | Tells the system the device is compatible with the Apple driver. |
| device-id | Data | <00521343> | Injects the device ID (Little Endian format). |
| name | String | pci14e4,4353 | Patches the device name. | “I spent 6 hours looking for a stable
(Note: The Data value <00521343> represents the mocking of the controller. If the device is strictly USB attached and not PCIe, skip to Step 4.)
Patches often go beyond security fixes; they resolve stability issues, improve performance, and enhance compatibility with evolving operating systems and standards. For VID 346D / PID 5678 owners, timely updates can:
The term "Best Patched" in the context of the L300 usually refers to modified versions of the vSpace software suite. N Computing’s driver model differs from standard plug-and-play devices; the driver is tied to the specific version of the vSpace server software.