I also have an hds gen 2 7. make sure you are buying the bundle that includes both the sonar and the side scan transducers. if you buy a gen 3, the software will be up to date. if you get a gen 2, you will need to update the version from the Lowrance website, but it only takes about 10 minutes to do. I love mine is all I can tell you, have never used any other than Lowrance.