1. Intel H55 chipset motherboard will require CPU with graphic core inside to support motherboard's on-board D-Sub / DVI / HDMI display output.
2. Dual display will only support one analog and one digital output at same time. Two digital output will not function properly. So DVI and HDMI display cannot use at same time.
Dual display setting can be set by VGA driver's utility.
3. VGA driver will be supported when use CPU with graphic core.
HDMI driver is combine in chipset driver package. Also need to support with CPU with graphic core.
4. When switch CPU from non-graphic core to graphic core. VGA and chipset drivers will need to install again.