Mini8_Server folder contains 2x Mini8 EtherNet/IP EDS files:

Mini8-EtherNetIP.eds  - Used for Mini8 Firmware v2.60 - v3.00
Mini8_v2.2.eds        - Used for Mini8 Firmware v6.01 onwards 

It is recommended to register the folder (instead of individual EDS files) in order to support both legacy Mini8 and new Mini8 devices in the same project.