The primary difference between the i-version and the standard version of these cases is the inclusion of our Smart Device in the i-version. The Smart Device is capable of handling LED lighting settings and fan control, through our CAM software.
The included Smart Device can control LED lighting for any of our first-generation LED products, in the same line as our HUE+. As such, LED Strips included with the HUE+ can be used with the Smart Device.
The H500i is also capable of vertical GPU mounting, whereas the H500 is not. Please refer to the article "How do I mount my GPU vertically with the H500i?" found here.