I have a brand new Navionics Platinum Plus 906PP - Southeast and Bahamas - SD Card that fit my old Simrad unit but not my new Garmin unit. The SD card has never been inserted in a GPS unit and it hasn’t been registered or updated so the year of renewing maps is good from registration date. $400 MSRP, I’m willing to part with it for $300. I’ll be in the lowcountry this weekend if you want it. Sent me a PM or email to: rgmaree6@gmail.com