Otherwise, the H55M and H55M Pro sport the same basic features, namely: an LGA1156 CPU socket, integrated Intel HD graphics and dual PCIe 2.0 x16 expansion slots.
The H55M Pro's 4 DIMM slots support up to 16GB of dual-channel DDR3 RAM with data transfer rates of 2600+(OC), 2133(OC), 1866(OC), 1600, 1333 and 1066MHz while its LGA1156 CPU socket allows for use of any Intel Core i3, i5 or i7-8xx processor. Its integrated Intel HD graphics processor provides the H55M Pro with out-of-the-box 1080p HD video and multi-monitor support with HDMI, DVI and VGA connections. Additionally, the H55M Pro's graphical capabilities can be greatly upgraded via its ATI CrossFireX dual-GPU support for high-end gaming performance.
