Compatibility The HP DisplayPort to VGA Adapter supports the HP Compaq dx2390, dx2400, dx2450, dx7400, dc5800, dc5850, dc7800 and dc7900 Business Desktop PCs or any graphics card that has a DisplayPort output. DisplayPort outputs are sometimes notated by the DP++ icon. It supports all HP monitors that feature VGA interface. NOTE: Using the HP DisplayPort to VGA Adapter may require an update to the graphics driver installed on your system. To install the most up-to-date graphics driver go to: www.hp.com.