Supported operating system:

Windows XP 32-bit
Windows XP 64-bit
Windows Vista 32-bit
Windows Vista 64-bit
Windows 7 32-bit
Windows 7 64-bit

Release note:
HP ProBook 5220m laptop Modem version 2.2.98.0 driver for Win7 released on 8th June 2010.

Microsoft Windows 7 Enterprise 32 Edition
Microsoft Windows 7 Enterprise 64 Edition
Microsoft Windows 7 Home Basic 32 Edition
Microsoft Windows 7 Home Basic 64 Edition
Microsoft Windows 7 Home Premium 32 Edition
Microsoft Windows 7 Home Premium 64 Edition
Microsoft Windows 7 Professional 32 Edition
Microsoft Windows 7 Professional 64 Edition
Microsoft Windows 7 Starter 32 Edition
Microsoft Windows 7 Ultimate 32 Edition
Microsoft Windows 7 Ultimate 64 Edition
Microsoft Windows Vista Business 32 Edition
Microsoft Windows Vista Business 64 Edition
Microsoft Windows Vista Enterprise 32 Edition
Microsoft Windows Vista Enterprise 64 Edition
Microsoft Windows Vista Home Basic 32 Edition
Microsoft Windows Vista Home Basic 64 Edition
Microsoft Windows Vista Home Premium 32 Edition
Microsoft Windows Vista Home Premium 64 Edition
Microsoft Windows Vista Starter 32 Edition
Microsoft Windows Vista Ultimate 32 Edition
Microsoft Windows Vista Ultimate 64 Edition
Microsoft Windows XP Home Edition
Microsoft Windows XP Media Center Edition
Microsoft Windows XP Professional
Microsoft Windows XP Professional x64 Edition
Microsoft Windows XP Tablet PC Edition

Supported Devices:
LSI HDA Modem