I purchase the bu-353 gp receiver to use with the marine navigation software I install on two different laptop use on my sailboat . one of the laptop run Windows xp and the other , Windows 7 -lrb- 64bit -rrb- . I install the latest driver from the manufacture website , then connect the gp receiver which have work flawlessly on both computer and under both operate system . the gp receiver be install inside the boat and receive signal through the fiberglass without issue .