What is the reason for having different hard coded USB IDs?
USB devices are typically listed in order by name. If two devices have the same name, they may swap order from time to time. To keep this from happening, we offer 9 different USB IDs for people who would like to use multiple AKI boards. Please remember to specify unique USB IDs for orders of more than one AKI board, if you intend to use the boards on the same PC.