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3G HSPA / CDMA cellular data and integrated GPS (NMEA) tracking. Hardware Device ID: USB\VID_03F0&PID_251D . Method 1: Installing via Compatibility Mode (Recommended)
The primary challenge is that Hewlett-Packard never officially released a driver specifically for Windows 10 for this module, meaning Windows Update typically won't resolve the issue for this specific legacy hardware. However, the final Windows 7/v8 driver is fully compatible with Windows 10 if you use the correct manual installation method. This driver package is listed as SoftPaq Number sp51022 or sp51022.exe , version 1.1.190.0 Rev. A .
Uninstall the driver from Device Manager, check "Delete the driver software for this device," and restart, then try manual installation again.
To use these:
If AT commands work, the driver is installed correctly.
For users who depend on their old HP ProBook or EliteBook for daily tasks, the functionality of a built-in 3G card is a nice-to-have feature. However, for a truly hassle-free and high-performance experience on modern networks, you may also consider investing in a more up-to-date 4G LTE USB dongle, which will offer better speeds and seamless plug-and-play compatibility. Nonetheless, for the dedicated enthusiast, bringing this piece of mobile broadband history back to life is a satisfying technical achievement.
Cellular carrier and activation:
The last stable driver released by HP is for Windows 7 (SoftPaq ).
Do not download drivers from third-party "driver updater" websites, as they often contain malware. Use the official HP SoftPaq packages instead.
The key principle for getting the HP un2420 to work is to "trick" Windows 10 into using its older, compatible Windows 7 drivers. Here are the three primary methods, from the most straightforward to the most technical.
