HDMI is backwards compatible with DVI. VGA/HDMI port can function similarly as DVI port by applying the bundled HDMI to DVI adapter. Please connect the HDMI to DVI adapter to the VGA/HDMI port on the I/O panel and then connect the DVI-D monitor cable to the VGA/DVI-D connector on the adpater.
For PS/2 Keyboard users, it is recommended to apply the adapter on HDMI2. If HDMI1 is connected to the adapter, please use USB Keyboard and do not use the PS/2 Keyboard port.
For the other users, apply it either on HDMI1 or HDMI2.