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Driver Modem Xidol K5188

Guide: Installing and Troubleshooting Xidol K5188 Modem Drivers

The Xidol K5188 is a 4G LTE USB modem used for portable internet connectivity. Like all USB modems, it requires specific drivers to communicate with your computer’s operating system. If your device is not being detected or is showing as a "Mass Storage" device (like a CD drive) instead of a modem, you likely need to install or update the driver.

Speed: Capable of download speeds up to 500 Mbps, though some variants list 100 Mbps or 150 Mbps. driver modem xidol k5188

Step 4: Manually install via Device Manager

  1. Right-click Start > Device Manager.
  2. Locate the Unknown device or a device named "USB Modem" with yellow triangle.
  3. Right-click > Update driver > Browse my computer for drivers.
  4. Browse to C:\Drivers\Xidol and check "Include subfolders".
  5. Click Next.

| Problem | Likely Cause | Solution | |--------|--------------|----------| | Error 10 (Device cannot start) | Resource conflict or generic USB driver loaded instead of vendor driver | In Device Manager, uninstall the device, check "Delete driver software", then reinstall using the manual INF method. | | Error 628 (Disconnected after dialing) | Incorrect COM port speed or flow control | Set port speed to 115200 bps, Flow control = Hardware (RTS/CTS). | | No dial tone | Line cable reversed or modem not initialized | Use AT&F to reset factory defaults; try ATX3 to ignore dial tone detection. | | Modem disappears after sleep | USB selective suspend | Go to Power Options > Change plan settings > USB selective suspend = Disabled. | | Driver installs but no COM port | INF file is corrupt or for different chipset | Force install as "Standard 56000 bps K56Flex Modem" then test. If fails, locate Conexant chipset driver. | Right-click Start > Device Manager

  • Spreadtrum (SPRD) Driver: This is the most common driver suite for budget 4G modems. Search for "Spreadtrum USB Driver for Windows".
  • Qualcomm QC Driver: If the device uses a Qualcomm chipset.
  • Pro Tip: The Xidol K518 is hardware-identical to the early XTOOL K518. The "K5188" driver is often found inside the "X100 PAD" driver folder.