The UM220-IV evaluation kit is independently designed by Unicore Communications,Inc. (hereinafter referred to as Unicore). It is mainly used as a test and evaluation platform for the function and performance of the UM220-IV series GNSS modules, which is convenient for users to use quickly and conveniently. Supporting both power supplying and data communicating by USB port, the EVK also supports external SD card for data logging. Two different kits are respectively named as UM220-IV M kit and UM220-IV N kit.