Download the latest and official version of drivers for HP Photosmart C4450 All-in-One Printer. This driver package is available for 32 and 64 bit PCs. It is compatible with the following operating Systems: Windows 10 (32-bit), Windows 10 (64-bit), Windows 8.1 (32-bit), Windows 8.1 (64-bit), Windows 8 (32-bit), Windows 8 (64-bit), Windows 7 (32-bit), Windows 7 (64-bit), Windows Vista (32-bit), Windows Vista (64-bit), Windows XP (32-bit), Windows XP (64-bit). Don't worry if you don't know what's your operating system. HP website will automatically detect your device and select the best installer for your OS.