Unlike standard consumer hardware, Mitsubishi does not typically distribute the EasySocket USB driver as a standalone, loose internet download. Instead, . 1. Check Your Local Installation First
| Error | Solution | |-------|----------| | | Ensure you didn’t download just a documentation ZIP. The real driver contains eusb2k.inf , eusb2k.sys , eusb2k.cat . | | Code 52 (unsigned driver) | Reboot Windows 7 with Driver Signature Enforcement disabled (F8 on boot → “Disable Driver Signature Enforcement”). | | USB device not detected at all | Try another USB port (USB 2.0 preferred, not 3.0). Also replace the USB cable (some cheap cables lack data lines). | | COM port number > 10 | GX Developer often only sees COM1-10. Go to Device Manager → Port Settings → Advanced → Change COM port number to COM3 or COM5. | | ZIP is corrupted | Re-download from Mitsubishi official source. Use 7-Zip (not Windows built-in) to extract. |
C:\Program Files\MELSOFT\EasySocket\USBDrivers mitsubishi easysocket usb driver windows 7 zip link
Without this driver, Windows 7 will attempt to install a generic driver for the PLC when you plug it in, usually resulting in an "Unknown Device" error or a failed connection in the engineering software.
Choose the second option: (Locate and install driver software manually). Step 4: Point to the Driver Directory Click the Browse... button. Check Your Local Installation First | Error |
I can then provide tailored steps to resolve your connection issues. Share public link
Click the button on the right-hand side of the window. | | USB device not detected at all
When you install one of these software packages, the USB driver files are placed in a folder named Easysocket\USBDrivers on your hard drive. This folder is the source for the manual driver installation.
When you connect a Mitsubishi PLC to a PC via a USB cable, Windows 7 usually fails to recognize the device automatically. It often displays a "Device driver software was not successfully installed" error or shows up as an "Unknown Device" in the Device Manager. The EasySocket driver resolves this issue by registering the correct Vendor ID (VID) and Product ID (PID) with the operating system. Where to Find the Driver ZIP Link
Before searching for third-party ZIP links—which can often contain malware or corrupted files—check your local C drive. If you have already installed GX Developer or GX Works, the precise driver files you need are already sitting in one of the following directories:
Search for the latest update package for or GX Works3 . Download the compressed .zip or .tar archive.